Triangle Numbers Pattern Program in C

Learn about Triangle Numbers Pattern Program in C in the below code example. Also refer the comments in the code snippet to get a detailed view about what’s actually happening.

Contents

Triangle Numbers Pattern Program in C

To print the below pattern in C programming then run the below code.

Program:

#include<stdio.h>
int main()
{
   int n, r, c, k, a;

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

   for(r=1;r<=n;r++)
   {
     for(c=1;c<=n-r;c++) printf(" ");

     for(k=1;k<=(2*r-1);k++)
     {
       if(k<r) printf("%d",k);
       else if(k==r)
       {
         printf("%d",k);
         a=k;
       }
       else printf("%d",--a);
     }

     printf("\n");
   }

   return 0;
}

Output:

Enter number of rows: 5
    1
   121
  12321
 1234321
123454321

Hope above code works for you and Refer the below Related Codes to gain more insights. Happy coding and come back again.

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