Pyramid Programming Print

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The below code print a pattern...and i am not understand the comment line..Can u please tell me

C++

#include <stdio.h>
 
int main()
{
   int row, c, n, temp;
 
   printf("Enter the number of rows in pyramid of stars you wish to see ");
   scanf("%d",&n);
 
   temp = n;
 
   for ( row = 1 ; row <= n ; row++ )
   {
      for ( c = 1 ; c < temp ; c++ )
         printf(" ");
 
      temp--;
 
      for ( c = 1 ; c <= 2*row - 1 ; c++ )// what is mean by this line?? please explain......
         printf("*");
 
      printf("\n");
   }
 
   return 0;
}

Posted 28-Dec-13 20:34pm

Member 10492698

Updated 28-Dec-13 20:40pm

User 59241

v4

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[no name] 29-Dec-13 2:44am

What do you want explained? Do you understand what the other for loops are doing?

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OriginalGriff · Answer 1 · 2013-12-28T22:06:00

It's a loop: it has three parts:

C++

for ( A ; B ; C)

Where:
A is the initial set up. In your case is sets "c" to 1 before it enters the loop.
B is the test that is performed each time the code is about to go round the loop. If it is true, then the code is executed. If not, the loop ends. In your case it checks that "c" is is still less than or equal to twice the rows minus one.
C is the step change - it defines what happens at the end of the loop, before the test is repeated to ensure that the loop ends when it is supposed to. In your case, it just adds one to "c"

So if rows was 2, the code in the loop would be executed 3 times. (2 * 2 - 1 == 4 - 1 == 3, so when c exceeds 3 the loop will stop.)