#includemain(){ int a,flag,k;scanf("%d",&a);flag=1;for (k=2;kmain(){ int a,flag,k; printf("输入a值："); scanf("%d",&a);flag=1;
for (k=2;kmain(){ int a,flag,k;scanf(“%d”,&a);flag=1;
for (k=2;k<=a/2;k++) if (a/k==0) break;flag=0;
if (flag=0);
printf(“%d” is not a prime number”,a);
else
printf(“%d” isa prime number”,a);}不知道这样改对不对
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