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C program to print the name of the source code file

Here, we are going to learn how to print the name of the source code file using C program?
By Nidhi Last updated : March 10, 2024

Problem Solution

In this program, we will use __FILE__ macro to print the name of the source code file. As we know that, a project contains multiple files, so we can print the name of the source code file from any source file function in the project.

__FILE__ Macro

__FILE__ is a preprocessor macro in C language that is used to get the full path to the current file. It is useful for debugging to generate the log statements, error messages intended for programmers, when throwing exceptions, or when writing debugging code.

Program

The source code to print the name of the source code file is given below. The given program is compiled and executed using GCC compile on UBUNTU 18.04 OS successfully.

// C program to print the name of
// source code file

#include <stdio.h>

int main()
{
    printf("Name of source file: %s\n", __FILE__);

    return 0;
}

Output

Name of source file: main.c

Explanation

As we know that, a project may contain multiple source code files. Then if we want to print the name of any source code file from any function. Then we can use __FILE__ macro to print the name of the source code file.

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