Concatenate Strings

Medium Strings
Solve in Playground →

Problem Statement

Write a C program to concatenate two strings together.

Input Format

Two space-separated strings on a single line.

Output Format

Print the concatenated string.

Constraints

Combined length <= 100

Sample Input

Hello World

Sample Output

HelloWorld

Explanation

Find the end of the first string and append the characters of the second string starting from that position.

Starter Code

#include <stdio.h>

int main() {
    char str1[101], str2[101];
    if (scanf("%100s %100s", str1, str2) == 2) {
        // Write your code here to concatenate str2 into str1 and print
    }
    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