C++

C++ goto Statement

Goto statement:

The goto statement is a control statement that is used to transfer the control from one place to another place without any condition in a program.

Flow chart:

Example of goto statements:

C++ Code

#include<iostream>
using namespace std;

void goto_statement() {
  cout << "ONE" << '\n';
  goto label;
  cout << "TWO" << '\n';
  cout << "THREE" << '\n';
  label:
    cout << "FOUR" << '\n';
}
int main() {
  goto_statement();
  return 0;
}

Output:-

ONE

FOUR

Explanation:- In the above program, the first cout statement(ONE) has been executed and after that line goto statement tells the compiler to go to the statement marked as a label in this way control is transferred label statement.

Problem statement:- program to display the first 5 odd numbers using the goto statement in c++

Code:

C++ Code

# include <iostream>
using namespace std;

void goto_statement() {
  int n = 1;
  cout << "first 5 odd numbers are:- ";
  jump: {
    if (n < 10) {
      // Control of the program move to jump:
      cout << n << " ";
      n += 2;
      goto jump;
    }
  }
}
int main() {
  goto_statement();
  return 0;
}

Output:- first 5 odd numbers are:- 1 3 5 7 9 

Explanation:- In the above program the first 5 odd numbers are displayed. if n is less than 10 goto statement transfers the control to the jump statement. If n is greater than 10 the control comes out of the loop.

Disadvantages of goto statement:-

  1. If we increase the goto statement in a program the tracing becomes difficult.
  2. Since goto is an unconditional statement, the efficiency of the program reduces by moving the control from one point to another unconditionally.
  3. By using break and continue statements we can reduce the usage of goto statements.

Special thanks to JAIGANESH R S for contributing to this article on takeUforward. If you also wish to share your knowledge with the takeUforward fam, please check out this article