第 PAGE \* MERGEFORMAT 39 页 共 NUMPAGES \* MERGEFORMAT 39 页

程序设计入门-C语言 浙大 翁恺循环类型编程源代码1、#include

int main(){int a,b;int min;scanf("%d %d", &a, &b);if ( a

int main(){int a,b;int t;scanf("%d %d", &a, &b);int origa = a;int origb = b;while ( b != 0 ) {t = a%b;a = b;b = t;}printf("%d和%d的最大公约数是%d.\n", origa, origb, a);return 0;}3、#include

int main(){int x;scanf("%d", &x);

int mask = 1;int t = x;while ( t>9 ) {t /= 10;mask *=10;} printf("x=%d, mask=%d\n", x, mask);do {int d = x / mask;printf("%d", d);if ( mask > 9 ) {printf(" ");}x %= mask;mask /= 10;} while ( mask > 0 );printf("\n");

return 0;}4、#include

int main(){int n;int i;double ret=0.0;

scanf("%d", &n);for ( i=1; i<=n; i++ ) {ret += 1.0/i;}printf("%f\n", ret);

return 0;}5、#include

int main(){int n;int i;double ret=0.0;int sign = 1;

scanf("%d", &n);for ( i=1; i<=n; i++ ) {ret += 1.0*sign/i;sign = -sign;}printf("%f\n", ret);

return 0;}6、#include

int main(){int x;int one, two, five;scanf("%d", &x);for ( one = 1; one < x*10; one++ ) {for ( two = 1; two < x*10/2; two++ ) {for ( five = 1; five < x*10/5; five++ ) {if ( one + two*2 + five*5 == x*10 ) {printf("可以用%d个1角加%d个2角加%d个5角得到%d元\n", one, two, five, x);break;}}}}return 0;}7、#include

int main(){int x;int one, two, five;int exit = 0;scanf("%d", &x);for ( one = 1; one < x*10; one++ ) {for ( two = 1; two < x*10/2; two++ ) {for ( five = 1; five < x*10/5; five++ ) {if ( one + two*2 + five*5 == x*10 ) {printf("可以用%d个1角加%d个2角加%d个5角得到%d元\n",