Triangle Patterns in C

Sun, 19 Oct 2025 20:00:00 +0600

Star Triangle

Left Triangle

#include <stdio.h>

int main() {

 int n ;
 printf("Enter Number of rows:");
 scanf("%d", &n);

 for(int i=1; i<=n;i++){

 for(int j=1; j<=i; j++){
 printf("%c",64+j);
 }
 printf("\n");
 }

 return 0;
}

In C, braces { } group multiple statements into a block. You can skip them for a single statement, but using { } is safer and improves readability.

Pyramid Patterns in C

Wed, 22 Oct 2025 20:00:00 +0600

Pyramid Top to Bottom

Print pyramid patterns from top to bottom.

#include <stdio.h>

int main() {
 int n;
 printf("Enter Number of rows:");
 scanf("%d", &n);

 for (int i = 0; i < n; i++) {

 for (int s = 0; s < n - i - 1; s++)
 printf(" ");

 for (int j = 0; j < 2 * i + 1; j++) {
 printf("*");
 }

 printf("\n");
 }
 return 0;
}

Upside Pyramid

Print upside-down pyramid patterns step by step.


#include <stdio.h>

int main() {
 int n;
 printf("Enter Number of rows:");
 scanf("%d", &n);

 for (int i = 0; i < n; i++) {

 for (int s = 0; s < i; s++)
 printf(" ");

 for (int j = 0; j < 2 * (n - i) - 1; j++) {
 printf("*");
 }

 printf("\n");
 }
 return 0;
}

Hollow Upside Pyramid

#include <stdio.h>

int main() {
 int n ;
 printf("Enter Number of rows:");
 scanf("%d", &n);

 for (int i=0; i< n; i++){

 for(int s=0; s<i;s++)
 printf(" ");

 for(int j=0; j<2*(n-i)-1; j++){
 if(j==0||i==0 ||j==2*(n-i)-2 ) printf("*");
 else printf(" ");

 }

 printf("\n");
 }
 return 0;
}

Pyramid with Space

Top to bottom

#include <stdio.h>

int main() {
 int n ;
 printf("Enter Number of rows:");
 scanf("%d", &n);

 for (int i=0; i< n; i++){

 for(int s=0; s<n-i-1;s++)
 printf(" ");

 for(int j=0; j<2*i+1; j++){
 if(j==0||i==n-1 ||j==2*i) printf("*");
 else printf(" ");

 }

 printf("\n");
 }
 return 0;
}

Pattern on @yt.yeasin50

Triangle Patterns in C

Star Triangle

Left Triangle

Pyramid Patterns in C

Pyramid Top to Bottom

Print pyramid patterns from top to bottom.

Upside Pyramid

Print upside-down pyramid patterns step by step.

Hollow Upside Pyramid

Pyramid with Space

Top to bottom