Vim Editor and GCC Compiler in C

Learn how to use the Vim Editor for writing C programs and get an introduction to the GCC Compiler. Step-by-step guide for beginners to write, compile, and run C programs efficiently.

Vim Editor, Writing, and Introduction to GCC Compiler

Vim Editor and GCC Compiler are essential tools for writing and compiling C programs, especially in Linux and Unix environments. This guide will help beginners understand how to use Vim for coding, writing C programs, and compiling them with GCC.

1. Vim Editor in C Programming

Vim is a powerful text editor used in Unix/Linux systems. It is widely used to write C programs because of its lightweight and efficient interface.

Key Features of Vim Editor:

• Syntax highlighting for C and other programming languages.
• Efficient editing using keyboard shortcuts.
• Multiple modes: Normal mode, Insert mode, and Command mode.
• Lightweight and fast, ideal for coding on servers and low-resource systems.

Basic Vim Commands for C Programming:

1. Open a file:

2. vim filename.c

1. Switch to Insert mode to write code: Press i.
2. Save and exit:
   • Save changes: Press Esc, then type :w and press Enter.
   • Save and exit: Press Esc, then type :wq and press Enter.
   • Exit without saving: Press Esc, then type :q! and press Enter.

2. Writing a Simple C Program in Vim

Open Vim and create a file called hello.c:

#include <stdio.h>

int main() {

    printf(“Hello, World!\n”);

    return 0;

}

Steps in Vim:

1. Open Vim:

2. vim hello.c

1. Press i to enter Insert mode.
2. Type or paste the above code.
3. Press Esc to return to Normal mode.
4. Save and exit: :wq

3. Introduction to GCC Compiler

GCC (GNU Compiler Collection) is used to compile C programs. It converts the human-readable C code into machine-executable files.

Basic GCC Commands:

1. Compile a C program:

2. gcc hello.c -o hello

1. • hello.c → source file.
   • -o hello → output executable file name.
2. Run the compiled program:

4. ./hello

Expected Output:

Hello, World!

4. Example: Compile and Run a C Program

C Program (addition.c):

#include <stdio.h>

int main() {

    int a, b, sum;

    printf(“Enter first number: “);

    scanf(“%d”, &a);

    printf(“Enter second number: “);

    scanf(“%d”, &b);

    sum = a + b;

    printf(“Sum = %d\n”, sum);

    return 0;

}

Steps to Compile and Run:

1. Open Vim and create the file:

2. vim addition.c

1. Enter Insert mode by pressing i and type/paste the code.
2. Press Esc and save with :wq.
3. Compile the code using GCC:

6. gcc addition.c -o addition

1. Run the program:

8. ./addition

Sample Output:

Enter first number: 10

Enter second number: 20

Sum = 30

5. Advantages of Using Vim and GCC

• Vim Editor:
  • Lightweight and fast for coding.
  • Supports multiple languages and syntax highlighting.
  • Ideal for terminal-based development.
• GCC Compiler:
  • Converts C programs into executable files.
  • Supports error checking and debugging.
  • Widely available in Linux, Unix, and Windows (via MinGW).

Conclusion:

Using Vim Editor along with GCC Compiler is an effective way for beginners and professionals to write, compile, and run C programs efficiently. With practice, you can master Vim shortcuts and GCC options for better programming workflow.

Ubunto C Programming

Search- terminal

Ctrl+T – open new terminal

Gcc – version

Prees enter

Sudo apt install build-essential

Clear

Compile: – gcc hello.c – o test

Run: – ./test

Gedit- open notpad

Compile: – gcc – o first first.c

Run: – ./first

Ubunto C++ Programming

g++    – – version

sudo apt install build – essential

open nano – text editor

#include<iostream>

using namespace std;

int main()

{

cout<<”Hello”<<endl;

return 0

}

Save the file – hello.cpp

Compile and run:

g++ hello.cpp –o hello

./hello

OR:

1. g++ –version (check version)
2. touch test.cpp (create file)
3. g++ test.cpp (compile file)
4. ./o.out (run program)
5. g++ test.cpp – o

POP- Introduction to Programming Using ‘C’

DS – Data structure Using C

OOP – Object Oriented Programming 

Java Programming

DBMS – Database Management System

RDBMS – Relational Database Management System