Program 48:Symbol Pattern 1

Program 48:

#include<stdio.h>
main()
{
 int i,j,num;
 printf("Enter number of rows\n");
 scanf("%d",&num);
 for(i=1;i<=num;i++)
 {
 
  for(j=1;j<=num;j++)
  {
   printf("*");
     
  }
  
 printf("\n");
 }
}

Explanation:

1. The program starts with initializing
   • num → To store number of rows
   • i ,j→ Temporary variable

2. printf("Enter number of rows\n");
    scanf("%d",&num);

   Taking number of rows from user.
3. Main Logic goes here:

   for(i=1;i<=num;i++)
    {
    
     for(j=1;j<=num;j++)
     {
      printf("*");
        
     }
     
    printf("\n");
    }

4. Lets take number of rows be 3.So num=3
   
   • Iteration 1 of First Loop:i=1 and i<=3 which is true so 1st Loop execute
     • Iteration 1 of 2nd Loop:j=1 and j<=3 which is true so iteration continues
       • And prints '*' in 1st row and 1st coumn
       • Now j  will be incremented by 1
       • So now j=2
     • Iteration 2 of 2nd Loop:j=2 and j<=3 which is true so iteration continues
       • And prints '*' in 1st row and 2nd coumn
       • Now j  will be incremented by 1
       • So now j=3
     • Iteration 3 of 2nd Loop:j=3 and j<=3 which is true so iteration continues
       • And prints '*' in 1st row and 3rd coumn
       • Now j  will be incremented by 1
       • So now j=4
     • Iteration 4 of 2nd Loop:j=4 and j<=3 which is false so 2nd loop terminates
     • So till now 1st row is printed
       
   • Iteration 2 of First Loop:i=2 and i<=3 which is true so 1st Loop execute
     • Iteration 1 of 2nd Loop:j=1 and j<=3 which is true so iteration continues
       • And prints '*' in 2nd row and 1st coumn
       • Now j  will be incremented by 1
       • So now j=2
     • Iteration 2 of 2nd Loop:j=2 and j<=3 which is true so iteration continues
       • And prints '*' in 2nd row and 2nd coumn
       • Now j  will be incremented by 1
       • So now j=3
     • Iteration 3 of 2nd Loop:j=3 and j<=3 which is true so iteration continues
       • And prints '*' in 2nd row and 3rd coumn
       • Now j  will be incremented by 1
       • So now j=4
     • Iteration 4 of 2nd Loop:j=4 and j<=3 which is false so 2nd loop terminates
     • So till now 1st row and 2nd row are printed
       
   • Iteration 3 of 1st loop will also be same as above 2 iterations for 3rd row and finally all the 3 rows are printed as output
   • Iteration 4 won't execute since i will be 4 and i<=3 i.e 4<=3 is not true

 Output: