C语言基础：简单的数学运算

C语言基础：简单的数学运算

#include <stdio.h>
int main ()
 {
   int seconds_in_an_hour;
   
   float average;
   seconds_in_an_hour = 60 * 60;
   average = (5 + 10 + 15 + 20) / 4;
   printf("The number of seconds in an hour %d\n", 
     seconds_in_an_hour);
   printf("The average of 5, 10, 15, and 20 is %f\n",  
     average);
   printf("The number of seconds in 48 minutes is %d\n",
     seconds_in_an_hour - 12 * 60);
return 1;
 }

gcc编译运行输出结果

The number of seconds in an hour 3600
The average of 5, 10, 15, and 20 is 12.000000
The number of seconds in 48 minutes is 2880