Check out example codes for "c program to the count the number of times each character appears". It will help you in understanding the concepts better.

Code Example 1

#include <stdio.h>
int main() {
    char str[1000], ch;
    int count = 0;

    printf("Enter a string: ");
    fgets(str, sizeof(str), stdin);

    printf("Enter a character to find its frequency: ");
    scanf("%c", &ch);

    for (int i = 0; str[i] != '\0'; ++i) {
        if (ch == str[i])

    printf("Frequency of %c = %d", ch, count);
    return 0;

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