Toggle Case

Easy Strings
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Problem Statement

Write a C program to toggle the case of each character in a string (uppercase to lowercase and vice versa).

Input Format

A single word string S.

Output Format

Print the string with toggled cases.

Constraints

1 <= Length <= 100

Sample Input

EdCret

Sample Output

eDcRET

Explanation

E->e, d->D, C->c, r->R, e->E, t->T.

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