#include
     
      int add(int a,int b){  return a+b; } int minus(int a,int b){  return a-b; } int multip(int a,int b){  return a*b; } int quotient(int a,int b){  return a/b; } int mod(int a,int b){  return a%b; }int main() {      int x,y;    scanf("%d%d",&x,&y);      printf("%d\n", add(x,y));      printf("%d\n", minus(x,y));      printf("%d\n", multip(x,y));      printf("%d\n", quotient(x,y));      printf("%d\n", mod(x,y));    return 0;}
     

#include
     
      int prime(int n){    int i;    for(i=2;i
     

#include
     
      int max2(int a,int b){if (a>b)return a;elsereturn b;}int max4(int a,int b,int c,int d){return((max2(a,b)),(max2(c,d)));}int main(){int a,b,c,d;scanf("%d%d%d%d",&a,&b,&c,&d);printf("最大值为%d\n",max4(a,b,c,d)); return 0；}
     

#include
     
      int fac(int n){if (n==1||n==0)return n;elsereturn n*fac(n-1);}int main(){int n;printf("请输入n的值：");scanf("%d",&n);printf("%d\n",fac(n));}