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Basic
Switch Case
Goto
Operators
if Statement
Nested if
While Loop
For Loop
Patterns
Array
2D Array
String Function Example
Pointers
Recursion Function
Structure
Excersises
Others



Print Triangle Border Pattern Using For Loop In C Program


Program to print triangle border pattern of n rows using for loop.

Example : pgm.c

#include<stdio.h>
int main(){
    int i,j,n;
	printf("\n Enter the limit:");
	scanf("%d",&n);
    for(i=1;i<=n;i++){
        for(j=1;j<=n-i;j++){
            printf(" ");
        }
        for(j=1;j<=i;j++){
            if(i==1||i==n||j==1){
                printf("*");
            }else{
                printf(" ");
            }
        }
        for(j=1;j<i;j++){
             if(i==1||i==n||j==i-1){
                printf("*");
            }else{
                printf(" ");
            }
        }
        printf("\n");
    }
    return 0;
}

Output:

Enter the limit: 10
         *
        * *
       *   *
      *     *
     *       *
    *         *
   *           *
  *             *
 *               *
*******************