代码: 全选
main()
{int sushu(int);
int a;
scanf("%d",&a);
if(sushu(a)) printf("%d is a sushu\n",a);
else printf("%d is not a sushu\n",a);
}
int sushu(int n)
{int i=2;
int r,b;
s1:r=n%i;
if(r==0) b=0;
else i=i+1;
if(i<=n-1) goto s1;
else b=1;
return(b);
)