Question

How to find the index of Nth occurrence of a character in a string with C

Answer 1

#include <stdio.h>

int GetNthIndexOfCh(char* s, char ch, int n) {
    int count = 0;
    
    for (int i = 0; s[i] != '\0'; i++) {
        if (s[i] == ch) {
            count += 1;
            if (count == n) {
                return i;
            }
        }
    }
    
    return -1;
}

int main() {
    char str[] = "java c++ c python c# javascript";
    
    printf("%d\n", GetNthIndexOfCh(str, 'a', 3));
    
    return 0;
}



/*
run:

22

*/

 

70+ SQL courses for beginners and professionals