C語(yǔ)言第一類(lèi)題型.docx

C語(yǔ)言編程第一周1. 編寫(xiě)一程序P122.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入4個(gè)數(shù)num1、num2、num3、num4，輸出：(num1num2的余數(shù))num3num4，不需考慮num2為0和計(jì)算結(jié)果溢出的情況。要求輸出的結(jié)果中，整數(shù)部分寬度為8(不足8時(shí)以0補(bǔ)足)、小數(shù)部分寬度為7。編程可用素材：printf(請(qǐng)輸入4個(gè)數(shù)：)、printf(n計(jì)算結(jié)果為：。請(qǐng)輸入4個(gè)數(shù)：10030100.123456725計(jì)算結(jié)果為：00001026.2345670#include int main(void)int num1, num2, num4;double num3, xx;printf(請(qǐng)輸入4個(gè)數(shù)：);scanf(%d%d%lf%d, &num1, &num2, &num3, &num4);xx = (num1 % num2) * num3 + num4;printf(n計(jì)算結(jié)果為：%016.7fn, xx);return 0;2. 編寫(xiě)一程序P134.C實(shí)現(xiàn)以下功能通過(guò)鍵盤(pán)輸入一串(約定為10個(gè)字符)，輸出每個(gè)字符對(duì)應(yīng)的ASCII碼值(十進(jìn)制)。編程可用素材：printf(n請(qǐng)輸入10個(gè)字符：)、printf(n加密結(jié)果為：。請(qǐng)輸入10個(gè)字符：VeryGood!加密結(jié)果為：86,101,114,121,32,71,111,111,100,33#include int main(void)char a1, a2, a3, a4, a5, a6, a7, a8, a9, a10;printf(n請(qǐng)輸入10個(gè)字符: );scanf(%c%c%c%c%c%c%c%c%c%c, &a1, &a2, &a3, &a4, &a5, &a6, &a7, &a8, &a9, &a10);printf(n加密結(jié)果為: %d, %d, %d, %d, %d, %d, %d, %d, %d, %dn, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);return 0;3. 編寫(xiě)一程序P721.C實(shí)現(xiàn)以下功能從鍵盤(pán)輸入x,y,z的值，編寫(xiě)程序輸出以下表達(dá)式的值：x+z%3*(int)(x+y)%2/4編程可用素材：printf(pleaseinputx,y,z:)、printf(nResult=。程序的運(yùn)行效果應(yīng)類(lèi)似地如圖1所示，圖1中的紅色部分是從鍵盤(pán)輸入的內(nèi)容。pleaseinputx,y,z:2.5,4.7,7Result=2.500000#include int main(void)float x, y, m;int zz;printf(please input x,y,zz: );scanf(%f%f%f, &x, &y, &zz);m = x + zz % 3 * (int)(x + y) % 2 / 4;printf(nResult =%fn, m);return 0;4. 編寫(xiě)一程序P736.C實(shí)現(xiàn)以下功能從鍵盤(pán)上輸入一個(gè)四位整數(shù)，計(jì)算各個(gè)位上的數(shù)字之和。編程可用素材：printf(Inputanumberwith4-digit:)、printf(nsum=n。Inputanumberwith4-digit:1234sum=10#include int main(void)int a1, a2, a3, a4, a5, sum;printf(Input a number with 4-digit: );scanf(%d, &a1);a2 = a1 % 10;a3 = a1 / 10 % 10;a4 = a1 / 100 % 10;a5 = a1 / 1000;sum = a2 + a3 + a4 + a5;printf(nsum=%dn, sum);return 0;第二周1. 編寫(xiě)一程序P132.C實(shí)現(xiàn)以下功能在屏幕上輸出Icanprintfn,t&!。程序的運(yùn)行效果應(yīng)類(lèi)似地如圖1所示。Icanprintfn,t&!#include int main(void)printf(I can printf n,t & !n);return 0;2. 編寫(xiě)一程序P710.C實(shí)現(xiàn)以下功能輸入一個(gè)小寫(xiě)英文字母，首先輸出它及其ASCII碼，然后輸出其對(duì)應(yīng)的大寫(xiě)字母及其ASCII碼。編程可用素材：printf(Inputalowercaseletter:)、printf(n()。Inputalowercaseletter: yy(121) Y(89)#include int main(void)char xiao, da;printf(Input a lowercase letter: );scanf(%c, &xiao);da = xiao - 32;printf(n%c(%d)n%c(%d)n, xiao, xiao, da, da);return 0;3. 編寫(xiě)一程序P711.C實(shí)現(xiàn)以下功能用scanf輸入圓半徑r，圓柱高h(yuǎn)，求圓周長(zhǎng)C1(2r)、圓面積S(r2)、圓柱體積V(r2h)。(注意：本題中規(guī)定圓周率取值為3.14)編程可用素材：printf(Input:)、printf(nC1=S=V=。Input:r=1.3,h=5 C1=8.16 S=5.31 V=26.53include #include int main(void)double rr, cc, ss, vv;int hh;printf(Input: );scanf(r=%lf, h=%d, &rr, &hh);cc = 3.14f * 2 * rr;ss = 3.14f * rr * rr;vv = 3.14f * rr * rr * hh;printf(nC1 = %.2fn S = %.2fn V = %.2fn, cc, ss, vv);return 0;4. 編寫(xiě)一程序P733.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入一個(gè)任意字符，輸出該字符ASCII的十六進(jìn)制值。編程可用素材：printf(Inputacharacter:)、printf(nAscii()=0xn。Inputacharacter:b Ascii(b)=0x62#include int main(void)char aa;printf(Input a character: );scanf(%c, &aa);printf(nAscii(%c) = 0x%xn, aa, aa);return 0;5. 編寫(xiě)一程序P723.C實(shí)現(xiàn)以下功能輸入三角形的三邊長(zhǎng)a、b、c(邊長(zhǎng)可以是小數(shù))，求三角形面積area，并輸出。如果輸入的三邊構(gòu)不成三角形，應(yīng)給出“dataerror”的信息提示。注：根據(jù)“海倫秦九韶”公式，areap(p-a)(p-b)(p-c)，其中p(a+b+c)/2。編程可用素材：printf(pleaseinputtriangesides:)、printf(ndataerrorn)、printf(narea=n。pleaseinputtriangesides:3,4,5 area=6.00pleaseinputtriangesides:3,4,8 dataerrorinclude #include int main(void)double aa, bb, cc, pp, area;printf(please input triange sides: );scanf(%lf, %lf, %lf, &aa, &bb, &cc);if (aa+bb cc & bb+cc aa & aa+cc bb)pp = ( aa + bb + cc ) / 2;area = sqrt( pp * ( pp - aa ) * ( pp - bb ) * ( pp - cc );printf(narea=%.2fn, area);elseprintf(ndata errorn);return 0;6. 編寫(xiě)一程序P135.C實(shí)現(xiàn)以下功能通過(guò)鍵盤(pán)輸入弧度x，輸出x的正弦值(可用庫(kù)函數(shù)sin)。編程可用素材：printf(請(qǐng)輸入弧度x:)、printf(nSin()=n。請(qǐng)輸入弧度x:1.552 Sin(1.55)=0.99982#include #include int main(void)double xx, aa;printf(請(qǐng)輸入弧度 x: );scanf(%lf, &xx);aa = sin(xx);printf(nSin(%.2f) = %.5fn, xx, aa);return 0;7. 編寫(xiě)一程序P259.C實(shí)現(xiàn)以下功能先從鍵盤(pán)讀入7個(gè)數(shù)據(jù)(依次為3整數(shù)、2字符、2實(shí)數(shù))，然后按示例格式倒序輸出這7個(gè)數(shù)據(jù)。編程可用素材：printf(請(qǐng)輸入7個(gè)數(shù)據(jù)(依次為3整數(shù)、2字符、2實(shí)數(shù)):)、printf(n這7個(gè)數(shù)據(jù)倒序?yàn)?)。請(qǐng)輸入7個(gè)數(shù)據(jù)(依次為3整數(shù)、2字符、2實(shí)數(shù)):8119235xm6127.123763152.351192這7個(gè)數(shù)據(jù)倒序?yàn)?7-152.351196-6127.123765-m4-x3-352-1921-81#include int main(void)int a1, a2, a3;char a4, a5;double a6, a7;printf(請(qǐng)輸入7個(gè)數(shù)據(jù)(依次為3整數(shù)、2字符、2實(shí)數(shù)): );scanf(%d %d %d %c %c %lf %lf, &a1, &a2, &a3, &a4, &a5, &a6, &a7);printf(n這7個(gè)數(shù)據(jù)倒序?yàn)? 7-%.5f 6-%.5f 5-%c 4-%c 3-%d 2-%d 1-%dn, a7, a6, a5, a4, a3, a2, a1);return 0;第三周1. 編寫(xiě)一程序P111.C實(shí)現(xiàn)以下功能x(x只考慮整數(shù)int且必須定義為int、但F(x)完全可能超過(guò)int的表示范圍)通過(guò)鍵盤(pán)輸入(輸入前給出提示Pleaseinputx:)，然后計(jì)算并在屏幕上輸出函數(shù)值。編程可用素材：printf(Pleaseinputx:)、printf(nF()=。-5x+27(x0)Pleaseinputx:3 F(3)=5#include int main (void)int xx;double fx;printf(Please input x: );scanf(%d, &xx);if (xx 0)fx = 2 * (double)xx - 1;printf(nF(%d) = %.0fn, xx, fx);return 0;2. 編寫(xiě)一程序P113.C實(shí)現(xiàn)以下功能已知某銀行整存整取存款不同期限的年息利率分別為：3.15%期限一年，3.63%期限二年，4.02%期限三年，4.69%期限五年，5.36%期限八年。從鍵盤(pán)上輸入存錢(qián)的本金(以元為單位，必須定義為int且應(yīng)考慮金額很大的情況)和存款期限(只考慮1,2,3,5,8)，求到期時(shí)能從銀行得到的利息(以元為單位，應(yīng)考慮有小數(shù)，不計(jì)復(fù)利)。編程可用素材：printf(Pleaseinputbenjin,cunqi:)、printf(nlixi=yuan。Pleaseinputbenjin,cunqi:10000,8lixi=4288.00yuan#include int main (void)int bj, cq;double money;printf(Please input benjin,cunqi: );scanf(%d,%d, &bj, &cq);money = bj;if (cq = 1)printf(nlixi = %.2f yuann, money * 0.0315);else if (cq = 2)printf(nlixi = %.2f yuann, money * 0.0363 * 2);elseif (cq = 3)printf(nlixi = %.2f yuann, money * 0.0402 * 3);elseif (cq = 5)printf(nlixi = %.2f yuann, money * 0.0469 * 5);elseif (cq = 8)printf(nlixi = %.2f yuann, money * 0.0536 * 8);return 0;3. 編寫(xiě)一程序P114.C實(shí)現(xiàn)以下功能編寫(xiě)一個(gè)簡(jiǎn)單計(jì)算器程序，輸入格式為：data1opdata2。其中data1和data2是參加運(yùn)算的兩個(gè)數(shù)(data1、data2必須定義為int，但二者相加可能超出int能表示的范圍)，op為運(yùn)算符，它的取值只能是+、-、*、/、%。編程可用素材：printf(Pleaseinputdata1opdata2:)、printf(nError!chushuwei0.n)。Pleaseinputdata1opdata2:3000+20003000+2000=5000#include int main(void)int data1, data2;char op;double aa;printf(Please input data1 op data2: );scanf(%d %c %d, &data1, &op, &data2);switch (op)case +:aa = (double) data1 + data2;printf(n%d+%d=%.0fn, data1, data2, aa);break;case -:aa = (double) data1 - data2;printf(n%d-%d=%.0fn, data1, data2, aa);break;case *:aa = (double) data1 * data2;printf(n%d*%d=%.0fn, data1, data2, aa);break;case /:if (data2 = 0)printf(nError! chu shu wei 0.n);elseaa = (double) data1 / data2;printf(n%d/%d=%.0fn, data1, data2, aa);break;case %:if (data2 = 0)printf(nError! chu shu wei 0.n);elseprintf(n%d%d=%dn, data1, data2, data1 % data2);break;default:printf(Invalid operator!n);return 0;4. 編寫(xiě)一程序P270.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入3個(gè)實(shí)數(shù)，按由大到小的順序輸出這3個(gè)數(shù)。編程可用素材：printf(請(qǐng)輸入3個(gè)數(shù)：)、printf(n這三個(gè)數(shù)由大到小為:%.2f%.2f%.2fn。請(qǐng)輸入3個(gè)數(shù)：200.351056.172.132這三個(gè)數(shù)由大到小為:1056.10200.3572.13#include int main (void)float a1, a2, a3, temp;printf(請(qǐng)輸入3個(gè)數(shù)：);scanf(%f %f %f, &a1, &a2, &a3);if (a1 a3 & a3 a2)temp = a2;a2 = a3;a3 = temp;if (a2 a1 & a1 a3)temp = a2;a2 = a1;a1 = temp;if (a2 a3 & a3 a1)temp = a1;a1 = a2;a2 = temp;temp = a2;a2 = a3;a3 = temp;if (a3 a1 & a1 a2)temp = a1;a1 = a3;a3 = temp;temp = a3;a3 = a2;a2 = temp;if (a3 a2 & a2 a1)temp = a1;a1 = a3;a3 = temp;printf(n這三個(gè)數(shù)由大到小為: %.2f %.2f %.2fn, a1, a2, a3);return 0;5. 編寫(xiě)一程序P713.C實(shí)現(xiàn)以下功能用scanf輸入某年某月某日，判斷這一天是這一年的第幾天？以3月5日為例，應(yīng)該先把前兩個(gè)月的加起來(lái)，然后再加上5天即本年的第幾天，特殊情況，閏年且輸入月份3時(shí)需考慮多加一天。注：判斷年份是否為閏年的方法為400的倍數(shù)為閏年，如2000年；若非100的倍數(shù)，而是4的倍數(shù)，為閏年，如1996年。編程可用素材：printf(Pleaseinputyear-month-day:).、printf(nItisthe.thday.n.。Pleaseinputyear-month-day:2000-3-1Itisthe61thday.#include int main (void)int year, month, day, sum;printf(Please input year-month-day: );scanf(%d-%d-%d, &year, &month, &day);sum = 0;switch (month - 1)case 11:sum = sum + 30;case 10:sum = sum + 31;case 9:sum = sum + 30;case 8:sum = sum + 31;case 7:sum = sum + 31;case 6:sum = sum + 30;case 5:sum = sum + 31;case 4:sum = sum + 30;case 3:sum = sum + 31;case 2:if ( year % 400 = 0 | ( year % 100 != 0 & year % 4 = 0 ) )sum = sum + 29;elsesum = sum + 28;case 1:sum = sum + 31;break;default :;sum += day;printf(nIt is the %dth day.n, sum);return 0;6. 編寫(xiě)一程序P737.C實(shí)現(xiàn)以下功能從鍵盤(pán)輸入3個(gè)整數(shù)，輸出絕對(duì)值最大的數(shù)。編程可用素材：printf(Input3numbers:)、printf(nThenumberwithmaximumabsolutevalueis.n。Input3numbers:1,-362,300Thenumberwithmaximumabsolutevalueis-362#include #include int main (void)int a1, a2, a3, b1, b2, b3, max;printf(Input 3 numbers: );scanf(%d, %d, %d, &a1, &a2, &a3);b1 = (int) fabs(a1);b2 = (int) fabs(a2);b3 = (int) fabs(a3);if (b1 = b2 & b1 = b3)max = a1;if (b2 = b1 & b2 = b2)max = a2;if (b3 = b1 & b3 = b2)max = a3;printf(nThe number with maximum absolute value is %d.n, max);return 0;7. 編寫(xiě)一程序P744.C實(shí)現(xiàn)以下功能(1)從鍵盤(pán)輸入一個(gè)一百分制成績(jī)，如果不在0100范圍內(nèi)，則要求重新輸入數(shù)據(jù)，直到輸入的數(shù)據(jù)在0100范圍內(nèi)。(2)將輸入的數(shù)據(jù)轉(zhuǎn)換成等級(jí)A，B，C，D，E。90分以上為A，8089分為B，7079分為C，6069分為D，60分以下為E。(3)要求使用switch、case、default語(yǔ)句，結(jié)果賦值給變量grade，并將變量grade的值輸出到屏幕上。(4)變量數(shù)據(jù)類(lèi)型的選擇應(yīng)適當(dāng)，在保證滿(mǎn)足設(shè)計(jì)要求精度的情況下，養(yǎng)成不浪費(fèi)內(nèi)存空間和計(jì)算時(shí)間的好習(xí)慣。編程可用素材：printf(pleaseinputthescore(0-100):)、printf(nscore=,grade=。pleaseinputthescore(0-100):103pleaseinputthescore(0-100):55.3score=55.3,grade=Einclude int main(void)float score;printf(please input the score(0-100): );scanf(%f, &score);while (score 100)printf(please input the score(0-100): );scanf(%f, &score);switch (int)(score / 10)case 10:case 9:printf(nscore=%.1f,grade=An, score);break;case 8:printf(nscore=%.1f,grade=Bn, score);break;case 7:printf(nscore=%.1f,grade=Cn, score);break;case 6:printf(nscore=%.1f,grade=Dn, score);break;default: ;if (score 60)printf(nscore=%.1f,grade=En, score);return 0;第四周1. 編寫(xiě)一程序P226.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入兩個(gè)整數(shù)iBegin和iEnd，要求輸出iBegin且iEnd的所有整數(shù)。編程可用素材：printf(PleaseInputtwonumber:)、printf(nResult:)、printf(%d。PleaseInputtwonumber:5162Result:5152535455565758596061622. 編寫(xiě)一程序P231.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入兩個(gè)整數(shù)iBegin和iCount，要求輸出iBegin的iCount個(gè)整數(shù)(后一數(shù)為前一數(shù)減7)。編程可用素材：printf(PleaseInputtwonumber:)、printf(nResult:)、printf(%d。PleaseInputtwonumber:9038Result:9038968898828758688618543. 編寫(xiě)一程序P125.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入兩個(gè)字符cBegin和cEnd，要求輸出cBegin且cEnd的所有字符。編程可用素材：printf(PleaseInputtwochar:)、printf(nResult:)。PleaseInputtwochar:MAResult:MLKJIHGFEDCBA4. 編寫(xiě)一程序P269.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入兩個(gè)整數(shù)iBegin和iEnd，要求按示例輸出iBegin且iEnd的所有整數(shù)及其相鄰的數(shù)。編程可用素材：printf(PleaseInputtwonumber:)、printf(nResult:)。PleaseInputtwonumber:800795Result:800/801799/800798/799797/798796/797795/796#include int main (void)int iBegin, iEnd, i;printf(Please Input two number: );scanf (%d %d, &iBegin, &iEnd);printf(nResult: );for (i = iBegin; i = iEnd; i-)printf( %d/%d, i, i+1);printf(n);return 0;5. 編寫(xiě)一程序P127.C實(shí)現(xiàn)以下功能從鍵盤(pán)讀入一個(gè)字符cBegin和一個(gè)數(shù)iCount，要求輸出cBegin的iCount個(gè)字符。編程可用素材：printf(PleaseInputacharandanumber:)、printf(nResult:)。PleaseInputacharandanumber:M9Result:MLKJIHGFE#include int main (void)int iCount, i, x;char cBegin;printf(Please Input a char and a number: );scanf (%c %d, &cBegin, &iCount);printf(nResult: );for (i = cBegin, x = 1; x = iCount; x+, i-)printf(%c, i);printf(n);return 0;6. 編寫(xiě)一程序P140.C實(shí)現(xiàn)以下功能從鍵盤(pán)輸入5個(gè)字符，輸出ASCII值最大的一個(gè)字符及其ASCII值。編程可用素材：printf(請(qǐng)輸入5個(gè)字符:)、printf(n最大的字符是-n。請(qǐng)輸入5個(gè)字符:YmAkX 最大的字符是m-109#include int main (void)char a1, a2, a3, a4, a5, max;printf(請(qǐng)輸入5個(gè)字符: );scanf (%c%c%c%c%c, &a1, &a2, &a3, &a4, &a5);max = a1;if ( a2 max)max = a2;if ( a3 max)max = a3;if ( a4 max)max = a4;if ( a5 max)max = a5;printf(n最大的字符是 %c-%dn, max, max);return 0;7. 編寫(xiě)一程序P714.C實(shí)現(xiàn)以下功能用scanf輸入10個(gè)整數(shù)（采用int數(shù)據(jù)類(lèi)型），計(jì)算所有正數(shù)的和、負(fù)數(shù)的和以及10個(gè)數(shù)的和。編程可用素材：printf(Input10integers:)、printf(nzhengshu=,fushu=,all=。Input10integers:4620-453556-23-4970zhengshu=200,fushu=-72,all=128#include int main (void)int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, fushu, zhengshu, all;printf(Input 10 integers: );scanf(%d %d %d %d %d %d %d %d %d %d, &a1, &a2, &a3, &a4, &a5, &a6, &a7, &a8, &a9, &a10);fushu = 0;zhengshu = 0;if (a1 0)zhengshu += a1;else fushu += a1;if (a2 0)zhengshu += a2;else fushu += a2;if (a3 0)zhengshu += a3;else fushu += a3;if (a4 0)zhengshu += a4;else fushu += a4;if (a5 0)zhengshu += a5;else fushu += a5;if (a6 0)zhengshu += a6;else fushu += a6;if (a7 0)zhengshu += a7;else fushu += a7;if (a8 0)zhengshu += a8;else fushu += a8;if (a9 0)zhengshu += a9;else fushu += a9;if (a10 0)zhengshu += a10;else fushu += a10;all = fushu + zhengshu;printf(nzhengshu=%d,fushu=%d,all=%dn, fushu, zhengshu, all);return 0;8. 編寫(xiě)一程序P752.C實(shí)現(xiàn)以下功能鍵盤(pán)輸入m,n（約定：m和n均1000且為正整數(shù)），輸出介于m和n（含m和n）中能被3整除且至少有位數(shù)字是5的所有整數(shù)。編程可用素材：printf(Inputm,n:)、printf(nResult:)。Inputm,n:100,200Result:105135150153156159165195#includeint main (void)int m, n, max, i;printf(Input m, n: );scanf(%d,%d, &m, &n);printf(nResult: );if (m n)i = n;max = m;else i = m;max = n;for (; i = max; i+)if (i % 3 = 0 ) & (i % 10 = 5 | (i / 10) % 10 = 5 | (i / 100) % 10 = 5 )printf( %d, i);printf(n);return 0;9. 編寫(xiě)一程序P753.C實(shí)現(xiàn)以下功能計(jì)算X的Y次方，其中Y為整數(shù)（可以是負(fù)整數(shù)或0），X為實(shí)型。注意，程序中不能使用庫(kù)函數(shù)pow或使用同名的變量、函數(shù)、單詞。編程可用素材：printf(Inputx,y:)、printf(nResult:=。Inputx,y:3.7,5Result:3.7000005=693.439570#include #include int main (void)double xx, aa;int yy, i , j;printf(Input x, y: );scanf(%lf,%d, &xx, &yy);aa = 1;i = (int) fabs(yy);j = 1;for (; j = i; j+)aa = xx * aa;if (yy 0)aa = 1 / aa;printf(nResult: %f%d=%fn, xx, yy, aa);return 0;10. 編寫(xiě)一程序P215.C實(shí)現(xiàn)以下功能求S=1/1！+1/2！+1/3！+1/N！并輸出結(jié)果(顯示時(shí)小數(shù)部分占16位，計(jì)算時(shí)要求從第1項(xiàng)開(kāi)始往后累加)。N為任意自然數(shù)(只考慮int型)，從鍵盤(pán)讀入。編程可用素材：printf(Pleaseinputn:)、printf(nS=1/1!+1/2!+.+1/!=。Pleaseinputn:18S=1/1!+1/2!+.+1/18!=1.7182818284590455#include int main (void)double ss, j;int n, i;printf(Please input n: );scanf(%d, &n);ss = 0;j = 1;for (i = 1; i = n; i+)j = j * i;ss = 1 / j + ss;printf(nS=1/1!+1/2!+.+1/%d!=%.16fn, n, ss);return 0;11. 編寫(xiě)一程序P716.C實(shí)現(xiàn)以下功能求s=a+aa+aaa+aaaa+aa.a的值，其中a是一個(gè)數(shù)字（可取19之間的一個(gè)值）。例如2+22+222+2222+22222（此時(shí)共有5個(gè)數(shù)相加），其中a值和有幾個(gè)數(shù)相加由鍵盤(pán)輸入控制。注意s的值有可能超出int的范圍，編程可用素材：printf(Pleaseinputa,n:)、printf(na+aa+.=。Pleaseinputa,n:2,3a+aa+.=246#include int main (void)double ss, j;int aa, nn, i;printf(Please input a,n: );scanf(%d,%d, &aa, &nn);j = 0;ss = 0;for (i = 1; i = nn; i+)j = j * 10 + aa;ss = ss + j;printf(na+aa+.=%.0fn, ss);return 0;第五周1. 編寫(xiě)一程序P211.C實(shí)現(xiàn)以下功能根據(jù)輸入的n在屏幕上顯示對(duì)應(yīng)的以#組成的菱形圖案。編程可用素材：printf(Pleaseinputn:)。Pleaseinputn:1# #include int main (void)int n , i, j;printf(Please input n: );scanf(%d, &n);for (i=1; i=2*n+1; i=i+)for (j=1; j=n+2 & i+j=-n & i-j=n)printf(#);else printf( );printf(n);return 0;2. 編寫(xiě)一程序P724.C實(shí)現(xiàn)以下功能從鍵盤(pán)輸入19之間的一個(gè)數(shù)，根據(jù)輸入的數(shù)，輸出對(duì)應(yīng)的下三角乘法口訣表。要求積的輸出占3個(gè)寬度，且左對(duì)齊。編程可用素材：printf(inputanumber(19):)。inputanumber(19):31*1=12*