实验2

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;

}

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;

}

 

更改后

#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;

}

3.

#include <stdio.h>
int main( )
{
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;
}