| // TEST2.cpp : Defines the entry point for the console application.
// http://wmnmtm.blog.163.com/blog/static/38245714201173073922482/ #include "stdafx.h" void x264_reduce_fraction( int *n, int *d )
{
int a = *n;
int b = *d;
int c;
if( !a || !b ) /* 即a和b中，只要有 0 存在 */
return;
c = a % b;
while(c)
{
a = b;
b = c;
c = a % b;
}
*n /= b; /* 把原值改掉了 */
*d /= b; /* 把原值改掉了 */
}
int main(int argc, char* argv[])
{
int a1,b1;
a1=5;
b1=25;
printf("\n\n"); printf("原值：\n");
printf("a1=%d\n",a1);
printf("b1=%d\n\n",b1); printf("**********************************************\n");
x264_reduce_fraction(&a1,&b1);
printf("调用x264_reduce_fraction(&a1,&b1)\n");
printf("**********************************************\n"); printf("\n现值：\n");
printf("a1=%d\n",a1);
printf("b1=%d\n",b1); return 0;
}
| 