c convert to int code example

Example 1: type change in c

#include <stdio.h>

main() {

   int sum = 17, count = 5;
   double mean;

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

Example 2: string to int c

atoi(str) is unsafe

This is the prefered method:
(int)strtol(str, (char **)NULL, 10)

Example 3: how to cast string to int in c

use atoi from the stdlib.h 
char *string = "hi";
int x = atoi(string);