程序设计入门-C语言 翁恺.docx

第 第 PAGE 10 页 共 10 页 程序设计入门-C 语言 浙大 翁恺 循环类型编程源代码 循环类型编程源代码 1、 #include stdio.h int main() { int a,b; int min; scanf(%d %d, a, b); if ( ab ) { min = a; } else { min = b; } int ret = 0; int i; for ( i = 1; i min; i++ ) { if ( a%i == 0 ) { if ( b%i == 0 ) { ret = i; } } } printf(%d 和%d 的最大公约数是%d.\n, a, b, ret); return 0; } 2 2、 #include stdio.h 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 3、 #include stdio.h int main() { int x; scanf(%d, x); int mask = 1; int t = x; while ( t9 ) { 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 4、 #include stdio.h 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 5、 #include stdio.h 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 6、 #include stdio.h 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 7、 #include stdio.h 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, one, two, five, x); exit = 1; break; } } if ( exit == 1 ) break; } if ( exit == 1 ) break; } return 0; } 8 8、 #include stdio.h int main() { int x; int one, two, five; scanf(%d, x); for ( one = 1; one x*10; one++ ) { for ( two = 1; two x*10