C Program to Check For Pangram String - Source Code, Output & Execution Flow

C Program to Check For Pangram String

This tutorial explains c program to check for pangram string with C source code, sample output, and step-by-step execution flow.

#include <stdio.h>
#include <ctype.h>
int main() {
    char str[] = "The quick brown fox jumps over the lazy dog";
    int seen[26] = {0}, i, count = 0;
    for (i = 0; str[i]; i++) if (isalpha(str[i])) seen[tolower(str[i]) - 'a'] = 1;
    for (i = 0; i < 26; i++) count += seen[i];
    if (count == 26) printf("Pangram string
");
    else printf("Not a pangram string
");
    return 0;
}

Pangram string

Practice This Program

In this program, the input is read first when required, the core logic is applied step by step, and the final result is displayed using printf(). Follow the execution flow beside the code to understand how each statement contributes to the output.