吴裕雄--天生自然C语言开发：强制类型转换

#include <stdio.h>

int main()
{
   int sum = , count = ;
   double mean;

   mean = (double) sum / count;
   printf("Value of mean : %f\n", mean );

}

#include <stdio.h>

int main()
{
   int  i = ;
   char c = 'c'; /* ascii 值是 99 */
   int sum;

   sum = i + c;
   printf("Value of sum : %d\n", sum );

}

#include <stdio.h>

int main()
{
   int  i = ;
   char c = 'c'; /* ascii 值是 99 */
   float sum;

   sum = i + c;
   printf("Value of sum : %f\n", sum );

}