大一c语言程序编写解惑

Question

Answer 1

#include <stdio.h>
#define N 100
int main()
{
      int a,b;
      float x,y;
      scanf("%d%d%f%f",&a,&b,&x,&y);
      printf("a+b=%d\n",a+b);
      printf("N*(a+b)=%d\n",N*(a+b));
      printf("x*y=%f",x*y);
      return 0;
}