In this article, I will show you, How to write a C program to print hollow rhombus star pattern. Here, one thing is important to know that all sides of the square must be the same.
#include <stdio.h>
int main()
{
int x = 0,y = 0;
unsigned int rows = 0;
printf("Enter the number of rows = ");
scanf("%u",&rows);
for(x=1; x<=rows; ++x)
{
// Print spaces
for(y=1; y<= (rows - x); ++y)
{
printf(" ");
}
// Print stars
for(y=1; y<=rows; ++y)
{
if((x==1) || (x==rows) || (y==1) || (y==rows))
{
//Print star
printf("*");
}
else
{
//Print space
printf(" ");
}
}
// Print new line
printf("\n");
}
return 0;
}
Output:
