2019.4.11课堂实验·

#include <stdio.h>

int main()

{

int a,b,sum;

a = 123;

b = 456;

sum = a+b;

printf("sum is %d\n",sum);

 

return 0;

}

 

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;

}

int main()

{

float x,y,z;

scanf("%f%f",&x,&y);

if (y<0)

{  

y=-y;

}

z=x+1/y;

printf("%d\n",z);

printf("%15.6f\n",z);

printf("%e\n",z);

 

           return 0;

}