char to int conversion in c code example

Example 1: char to int c++

int x = (int)character - 48;

Example 2: turn a char into an int in c

int x = character - '0';

Example 3: char to int in c

strcpy(str, "98993489");
   val = atoi(str);
   printf("String value = %s, Int value = %d\n", str, val);