#include <stdio.h>
#include <stdlib.h>
int main()
{
int a=43;
int b=22;
float c=12.1;

int d=a+b;
float e=a*b;
double f=c/b;

printf("d=%d, e=%f, f=%lf\n", d, e, f);
printf("pause");
return 0;


}

关键字的运用最重要