[Solved] What will be the output of this C program?#include <stdio.h> #include "myheader.h" int main() { printMessage(); return 0; }Assuming myheader.h contains:void printMessage() { printf("Hello from header!... | C

C - Basics and Execution Environment

What will be the output of this C program?

#include <stdio.h>
#include "myheader.h"

int main() {
    printMessage();
    return 0;
}

Assuming myheader.h contains:

void printMessage() {
    printf("Hello from header!\n");
}

ANo output

BCompilation error: function not declared

CRuntime error

DHello from header!

Step-by-Step Solution

Solution:

Step 1: Understand #include "myheader.h" effect
The content of myheader.h is inserted, so printMessage() is defined before main.
Step 2: Check function call and output
printMessage() prints "Hello from header!\n", so the program outputs that line.
Final Answer:
Hello from header! -> Option D
Quick Check:
Included function runs and prints message [OK]

Quick Trick: Including header inserts code, so functions are available [OK]

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