第一次实验

1、

#include<stdio.h>

int main()

{

         int a,b,sum;

         a=97;

         b=98;

         sum=a+b;

         printf("sum is %d\n",sum);

         return 0;

}

 

2、

#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;

}

                       

 

 

3、

#include<stdio.h>

#include<stdlib.h>

int main()

{

         int x,y,z;

         scanf("%d %d",&x,&y);

         y=abs(y);

         z=x+1/y;

         printf("%d\n",z);

         printf("%15.6f\n",z);

         printf("%e\n",z);

         return 0;

}