Write a C program to round a number.
#include <math.h>
int main() {
float num, round;
/* Get the input from the user */
printf("Enter the value for num:");
scanf("%f", &num);
/*
* round the given number using ceil() API
* ceil(123.45) = 124
*/
round = ceil(num);
/* print the rounded value */
printf("After ceil rounding: %.2f", round);
printf("\n");
/*
* round the given number using floor() API
* floot(123.56) = 123
*/
round = floor(num);
/* print the rounded value */
printf("After floor rounding: %.2f", round);
printf("\n");
return 0;
}
Note:
gcc round.c -lm => link math library since we have used math functions ceil() and floor().
Output:
jp@jp-VirtualBox:~/$ ./a.out
Enter the value for num:1234.123
After ceil rounding: 1235.00
After floor rounding: 1234.00
Enter the value for num:1234.123
After ceil rounding: 1235.00
After floor rounding: 1234.00
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