4.11实验一

1.

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

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}

 

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);

}

 

3.

#include<stdio.h>

int main()

{  

char c1,c2;

 c1=197;

 c2=198;

 printf("c1=%c,c2=%c\n",c1,c2);

 printf("c1=%d,c2=%d\n",c1,c2); 

 return 0;

}

 

 

4.

 

#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;
}

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