Question

Consider the following code segment, what is the output?
//you please explain your answer with all the steps??
          
          int j, k;
          for (k=0;k<10; k++)
          {
             for (j=0; j<5;j++)
             cout << "*";
          }
          cout << endl;

Answer 1

// Screenshot of the code

Untitled1 Dev-C++5.11 X AStyle Window Help File Edit Search View Project Execute Tools 品口国品 TDM-GCC 4.9.2 64-bit Releas globals) Project Class Untitled1.cpp 1 include<iostream> 3 using name space std; 4 int main () 6 E int j, k /outer for loop for (k 0;k<10; k++) 8 10 E // inner for loop for (j-0; j<5;j++) cout << "" 11 12 13 14 15 cout < endl; 16 return 0; 17 } 18 1 9 20 21 22 23 Activate Windows Resources h Compile Log Go to Settings to activate Windows. Compiler Debug Find Results Col: 1 Line: 30 Sel: Lines: 30 Done parsing in 0,031 seconds 0 Insert

// Sample output

C:AUsers\Lenovo\Desktop\demo.exe Process exited after 0.06477 seconds with return value 0 Press any key to cont inue X

// code to copy

#include <iostream>

using namespace std;

int main()
{   
int j, k;
// outer for loop
   for (k=0;k<10; k++)
   {
       // inner for loop
       for (j=0; j<5;j++)
       cout << "*";
   }
   cout << endl;
return 0;
}

Explanation:

here output prints as * for 50 times because for

per each iteration of outer for loop, the inner for loop executes 5 times j starts from 0 to 5 by printing * for each iteration.

After 1^st iteration of outer for loop inner for loop executes and prints * for 5 times as *****

after 2^nd iteration of outer for loop ,the inner for loop adds another 5* so output **********

after 3^rd iteration of outer for loop ,the inner for loop adds another 5* so output ***************

-------------------------------------------------------------------------------------------------------------------------

after 10^th iteration of outer for loop ,the inner for loop adds another 5* so output ************************************************************

Here

for (k=0;k<10; k++)  is outer for loop

for (j=0; j<5;j++) is an inner for loop