Write a C program to print left arrow star pattern series using for loop. How to print left arrow (mirrored arrow) star pattern structure in C program. Logic to print left arrow star pattern in C programming.
Required knowledge
Basic C programming, For loop, Nested loop
Logic to print left arrow star pattern
Let’s first divide this pattern in two parts to make our task easy.
If you have noticed number of spaces in the upper part per row is n – rownumber and bottom part contains rownumber – 1 spaces per row (where n is the total number of rows). If you ignore the leading spaces in both parts you will notice that the upper part is similar to inverted right triangle and lower part is similar to right triangle star pattern.
Program to print left arrow star pattern
/**
* C program to print left arrow star pattern
*/
#include <stdio.h>
int main()
{
int i, j, n;
// Input number of rows from user
printf("Enter value of n : ");
scanf("%d", &n);
// Print upper part of the arrow
for(i=1; i<n; i++)
{
// Print trailing (n-rownumber) spaces
for(j=1; j<=(n-i); j++)
{
printf(" ");
}
// Print inverted right triangle
for(j=i; j<=n; j++)
{
printf("*");
}
printf("\n");
}
// Print bottom part of the arrow
for(i=1; i<=n; i++)
{
// Print trailing (rownumber-1) spaces
for(j=1; j<i; j++)
{
printf(" ");
}
// Print the right triangle
for(j=1; j<=i; j++)
{
printf("*");
}
printf("\n");
}
return 0;
}Output
Enter value of n : 5
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*****Happy coding 😉