c program to the count the number of times each character appears

1#include <stdio.h>
2int main() {
3    char str[1000], ch;
4    int count = 0;
5
6    printf("Enter a string: ");
7    fgets(str, sizeof(str), stdin);
8
9    printf("Enter a character to find its frequency: ");
10    scanf("%c", &ch);
11
12    for (int i = 0; str[i] != '\0'; ++i) {
13        if (ch == str[i])
14            ++count;
15    }
16
17    printf("Frequency of %c = %d", ch, count);
18    return 0;
19}
20