* ** * * * * *****
/**
* C program to print hollow right triangle star pattern
* atnyla.com
*/
#include <stdio.h>
int main()
{
int i, j, rows;
/* Input rows from user */
printf("Enter number of rows: ");
scanf("%d", &rows);
for(i=1; i<=rows; i++)
{
for(j=1; j<=i; j++)
{
/*
* Print star for first column(j==1),
* last column(j==i) or last row(i==rows).
*/
if(j==1 || j==i || i==rows)
{
printf("*");
}
else
{
printf(" ");
}
}
printf("\n");
}
return 0;
}<pre style="text-align:left">Enter number of rows: 5
*
**
* *
* *
*****
</pre>
Basic C programming, If else, For loop, Nested loop
Must know - Program to print hollow square star pattern.
* ** * * * * *****
Logic to print a hollow right triangle is almost similar to right triangle star pattern logic. Just with this pattern you need to print stars only for first and last column or row.
Step by step descriptive logic to print hollow right triangle star pattern.
for(i=1; i<=rows; i++).for(j=1; j<=i; j++)./* * C program to print right triangle star pattern series * atnyla.com */ #include <stdio.h> int main() { int i, j, n; /* Input number of rows from user */ printf("Enter value of n: "); scanf("%d", &n); for(i=1; i<=n; i++) { /* Print i number of stars */ for(j=1; j<=n; j++) { if(j<=i) printf("*"); else printf(" "); } /* Move to next line */ printf("\n"); } return 0; }
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.