Example: C Program to Find the Frequency of Characters in a String

C
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// C Program to Find the Frequency of Characters in a String
#include <stdio.h>

// It's the main function of the program
int main() {
    char string[500], search_char;
    int string_count = 0;

    // Step-1 Take input any sentence up to 500 characters
    printf("Enter the string: ");
    fgets(string, sizeof(string), stdin);

    // Step-2 Enter a character to find
    printf("Enter a character to count it's frequency: ");
    scanf("%c", &search_char);

    // Step-3 Make iteration over the given sentence
    for (int i = 0; string[i] != '\0'; i++) {
        if (string[i] == search_char) {
            string_count += 1;
        }
    }

    // Step-4 Final output of the program
    printf("Frequency of '%c' is %d\n", search_char, string_count);
    return 0;
}