#includeint add(int a,int b);int minus(int a,int b);int multip(int a,int b);int quotient(int a,int b);int mod(int a,int b);int main(){ int a,b; printf("请输入两个数字"); scanf("%d%d",&a,&b); printf("这两个数字的和为%d\n",add(a,b)); printf("这两个数字的差为%d\n",minus(a,b)); printf("这两个数字的积为%d\n",multip(a,b)); printf("这两个数字的商为%d\n",quotient(a,b)); printf("这两个数字的模为%d\n",mod(a,b)); return 0;}int add(int a,int b){ int c; c=a+b; return c;}int minus(int a,int b){ int c; c=a-b; return c;}int multip(int a,int b){ int c; c=a*b; return c;}int quotient(int a,int b){ int c; c=a/b; return c;}int mod(int a,int b){ int c; c=a%b; return c;}
#includeint prime(int);int main(){ int a; int sushu; printf("请输入一个数字"); scanf("%d",&a); sushu=prime(a); printf("%d是一个质数吗？\n%d（1是质数，0不是质数）",sushu); return 0;}int prime(int a){ int c; int n; for(n=1,c=2;c
#includeint max2(int a,int b);int max4(int a,int b,int c,int d);int main(){ int a,b; int c,d; int i; scanf("%d%d",&a,&b); scanf("%d%d",&c,&d); i=max4(a,b,c,d); printf("最大的数字是%d",i); return 0;}int max2(int a,int b){ int c; c=(a>b)?a:b; return c;}int max4(int a,int b,int c,int d){ int f,g,h; f=max2(a,b); g=max2(c,d); h=max2(f,g); return h;}