C program to print reverse right triangle star pattern

Write a C program to print inverted right triangle star pattern series using for loop. How to print inverted right triangle star pattern series of n rows in C programming. Logic to print inverted right triangle star pattern in C programming.

Example

Input

Input rows: 5

Output

Logic to print inverted right triangle star pattern

The above pattern contains N rows and each row contains N-i + 1 columns (where i is the current row number). Considering this let us write a step by step descriptive logic to print inverted right triangle star patter.

1. Input number of rows to print from user. Store it in a variable say rows.
2. To iterate through rows run an outer loop from 1 to rows. The loop structure should look like for(i=1; i<=rows; i++).
3. To iterate through columns run an inner loop from i to rows. The loop structure should look like for(j=i; j<=rows; j++). Inside this loop print star.

Note: Instead of iterating from i to rows you can also iterate from 1 to rows - i + 1.

4. After printing all columns of a row, move to next line i.e. print new line.

Also learn - Program to print right triangle star pattern.

Program to print inverted right triangle star pattern

/**
* Reverse right triangle star pattern program in C
*/

#include <stdio.h>

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

/* Input number of rows from user */
printf("Enter number of rows : ");
scanf("%d", &rows);

/* Iterate through rows */
for(i=1; i<=rows; i++)
{
/* Iterate through columns */
for(j=i; j<=rows; j++)
{
printf("*");
}

/* Move to the next line */
printf("\n");
}

return 0;
}

Output

Enter number of rows: 5
*****
****
***
**
*

Happy coding 😉 