goto

The goto statement allows jumping to a statement contained within the same function. The target statement must be preceded by a label: 
goto outOfLoop;

// statements

outOfLoop: cout << "Sum of indices is 5";
The use of goto should be limited to cases in which it greatly contributes to code readability or efficiency, as its use is never strictly necessary and somewhat conflicts with the need to maintain consistency between the order of statement execution and the one in which statements are written. See the following example in which a goto is used to exit four nested loops. The alternative would be to execute four different break statements, one for each loop.

Example


#include <iostream>
using namespace std;

int main()
{   
     for(int i = 0; i <= 3; i++)
           for(int j = 0; j <= 3; j++)
                for(int k = 0; k <= 3; k++)
                     for(int l = 0; l <= 3; l++)
                     {
                           cout << i << " " << j << " " << k << " " << l << "\n";
                           if(i + j + k + l == 5) // stop when sum of indices is 5
                                goto outOfLoop; // if I didn't have this I would have to have three more if(...) break;
                     }
outOfLoop: cout << "Sum of indices is 5";
}

Output

0 0 0 0
0 0 0 1
0 0 0 2
0 0 0 3
0 0 1 0
0 0 1 1
0 0 1 2
0 0 1 3
0 0 2 0
0 0 2 1
0 0 2 2
0 0 2 3
Sum of indices is 5