C++ :

#include <iostream>
using namespace std;
int main() {
    char str[100];
    char ch;
    cin.getline(str, 100);
    cin >> ch;
    int count = 0;
    int i = 0;
    while (str[i] != '\0') {
        if (str[i] == ch) {
            count++;
        }
        i++;
    }
    cout << count << endl;
    return 0;
}