1.
#include <stdio.h>
int main( )
{
int a,b,sum;
a = 123;
b = 456;
sum = a + b;
printf("sum is %d ",sum);
return 0;
}
2.
#include <stdio.h>
int main( )
{ char c1, c2;
c1=97;
c2=98;
printf("c1= %c,c2=%c ",c1,c2);
printf("c1= %d,c2=%d ",c1,c2);
return 0;
}
更改后
#include <stdio.h>
int main( )
{ char c1, c2;
c1=197;
c2=198;
printf("c1= %c,c2=%c ",c1,c2);
printf("c1= %d,c2=%d ",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;
}