In this article, I will show you, How to write a C program to print half diamond star patterns. How to print half diamond star pattern in C programming. Here, one thing is important to know that the columns of the half diamond.
Logic to C program to print half diamond star pattern:
- Enter the column value for the half diamond.
- Here I have used two loops one is the outer loop to change the line and the second is inner loops to print star.
- Create a variable col and initialized with 1.
- The outer loop iterates column times and prints a newline after completing the inner loop. It also increments and decrements the col variable according to columns (a variable that contains columns of half diamond).
- Inner loop print the star 1 to the col (current column count).
Logic to C program to print half diamond star pattern:
#include <stdio.h> int main() { int x = 0,y = 0; unsigned int columns = 0; unsigned int col = 0; printf("Enter the number of columns = "); scanf("%u",&columns); for(x=0; x < (columns*2) ; ++x) { // Print spaces for(y=0; y < col; ++y) { printf("*"); } (x<columns)?(++col):(--col); // Print new line printf("\n"); } return 0; }
Output:
Code Analysis:
It asks the user to enter the columns for the half diamond.
printf("Enter the number of columns = "); scanf("%u",&columns);
Inner loop print star 1 to (col-1) times.
// Print star for(y=0; y < col; ++y) { printf("*"); }
The outer loop iterates 0 to (2* columns). It prints the new line and calculates the value of col.
for(x=0; x < (columns*2) ; ++x) { // Print star for(y=0; y < col; ++y) { printf("*"); } (x<columns)?(++col):(--col); // Print new line printf("\n"); }
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