实验1

 

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

 

 

 

 

#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;
}