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/**
* Reverse right triangle star pattern program in C
* atnyla.com
*/
#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;
}Enter number of rows: 5
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Basic C programming, For loop, Nested loop
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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.
for(i=1; i<=rows; i++).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.
Also learn - Program to print right triangle star pattern.
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.