怎么实现重复执行
#include <stdio.h>main()
{
int a = 0, b = 0 , c = 0 ;
printf("请输入a的值: ");
scanf("%d",&a);
printf("请输入b的值: ");
scanf("%d",&b);
{
if (a >= 50 , b >= 50)
c = a * b;
else if (a >= 50 , b <= 50)
c = a - b;
else (a <= 50 , b <= 50)
c = a + b;
printf("计算结果为: ");
printf("%d\n",c);
}
while(1)
{
char c;
printf("请选择继续y或者离开n\n");
fflush(stdin);
c=getchar();
if(c=='y')
continue;
else
break;
}
return main;
}