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C programs to display Pattern according to number of rows

In these C programs, we are going to learn how to print display patterns using asterisks where number of rows is given?
Submitted by Preeti Jain, on February 18, 2018

Example 1: When number of rows: 4

       *
      ***
     *****
    *******

Example 2: When number of rows: 5

        *
       ***
      *****
     *******
    *********

Here is the C program, that will read number of rows from user and print the display pattern of asterisks according to given input.



#include<stdio.h>

int main(){
	int num_of_rows,i,j;

	printf("Enter Number Of Rows");
	scanf("%d",&num_of_rows);

	for(i=1;i<=num_of_rows;++i)
	{
		for(j=1;j<=(2*num_of_rows-1);++j)
		{
			if(j>=(num_of_rows+1-i) && j<=(num_of_rows-1+i))
				printf("*");
			else
				printf(" ");
		}
		printf("\n");
	}
	return 0;
}





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