Count Characters

Easy File Handling
Solve in Playground →

Problem Statement

Write a C program to count the total number of characters in a text file ‘test.txt’.

Input Format

A single word string S.

Output Format

Print the character count.

Constraints

1 <= Length <= 100

Sample Input

Edcret

Sample Output

6

Explanation

Reads test.txt character by character and tallies total count.

Starter Code

#include <stdio.h>

int main() {
    char s[101];
    if (scanf("%100s", s) == 1) {
        // Write your code here
    }
    return 0;
}

Limits

  • Time Limit: 1s
  • Memory Limit: 256MB

Embedded C Programming

Updated: March 15, 2026
Intermediate

Embedded systems rely on efficient low-level programming to interact directly with hardware. In this course, you will learn how to write practical Embedded C programs used in real microcontroller-based systems. Rather than focusing only on theory, this course follows a practice-driven approach. Each lesson includes hands-on coding exercises that simulate real firmware development tasks used