出自:http://baike.baidu.com/view/656650.htm
fflush(stdin)
1 #include <stdio.h> 2 int main() 3 { 4 int num1,num2; 5 char flag; 6 while(1) 7 { 8 printf("Please input num1:"); 9 scanf("%d",&num1); 10 printf("Please input num2:"); 11 scanf("%d",&num2); 12 printf("%d+%d=%d ",num1,num2,num1+num2); 13 printf("Continue?[Y/N]"); 14 fflush(stdin); 15 scanf("%c",&flag); 16 if(flag=='N'||flag=='n') 17 { 18 break; 19 } 20 } 21 printf("Press any key to continue..."); 22 fflush(stdin); 23 getchar(); 24 return 0; 25 }