第一次实验

#include<stdio.h>
int main(){
 char c1,c2;
 c1=97;
 c2=98;
 printf("c1=%c,c2=%c\n",c1,c2);
 printf("c1=%d,c2=%d\n",c1,c2);
 return 0;
}

 

#include<stdio.h>
int main(){
 int a,b,sum;
 a=123;
 b=456;
 sum=a+b;
 printf("sum is %d\n",sum);
 return 0;
}

 

#include<stdio.h>
#include<math.h>
int mian(){
    float x,y,z;
    scanf("%f %f",&x,&y);
    z=x+1/fabs(y);
    printf("%d %15.6f %e",(int)z,z,z);
    return 0;
}