C program to triangle number pattern

In this tutorial, we will discuss how to write following C program to triangle number pattern

Here, some of Floyd’s triangle number patterns are written using nested for loop in C language

Program 1

Code to triangle number pattern 1

C program to triangle number pattern — Triangle number pattern 1

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int rows;
    printf("Triangle pattern 1\n\n");
    printf("Enter the rows: ");
    scanf("%d",&rows);
    int i,j;
    for(i=1; i<=rows; i++)
    {
        for(j=i; j<=rows; j++)
    {
        printf("%d",i);
    }
      printf("\n");
    }
   getch();
    return 0;
}

When the above code is executed, it produces the following results:

Program 2

Code to triangle number pattern 2

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int rows;
    printf("Triangle pattern 1\n\n");
    printf("Enter the rows: ");
    scanf("%d",&rows);
    int i,j;
    for(i=1; i<=rows; i++)
    {
        for(j=i; j<=rows; j++)
    {
        printf("%d",j);
    }
      printf("\n");
    }
   getch();
    return 0;
}

When the above code is executed, it produces the following results:

Program 3

Code to triangle number pattern 3

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int rows;
    printf("Triangle pattern 3\n\n");
    printf("Enter the rows: ");
    scanf("%d",&rows);
    int i,j,k;
    for(i=rows; i>=1; i--)
    {
        if(i%2==1){k=1;
        }
        else {k=i;}
        for(j=1; j<=i; j++)
    {
        printf("%d",k);
        if(i%2==1){k++;}
        else {k--;}

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

When the above code is executed, it produces the following results:

Program 4

Code to triangle number pattern 4

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int rows, i,j,k=1;
    printf("Enter the rows for pattern: ");
    scanf("%d",&rows);           //input from user
    printf("here your pattern\n");
    for(i=1; i<=rows; i++){   //for rows
        for(j=1; j<=i; j++){
        printf("%d",k);
        k++;
    }
    k--;
    for(j=1; j<=i-1; j++){
k--;
            printf("%d",k);
    }


        printf("\n");
        k=1;
    }
    getch();
    return 0;
}

When the above code is executed, it produces the following results:

Enter the rows for pattern:9
here your pattern
1
121
12321
1234321
123454321
12345654321
1234567654321
123456787654321
12345678987654321

Suggested for you

For loop in Java language

For loop in C++ language

For loop in C language

For loop in Python language

While loop in Java language

While loop in C language

While loop in C++ language

While loop in Python language

Do-while loop in Java language

Do-while loop in C language

Do-while loop in C++ language

C program to print star pyramid pattern

C++ program to print star pyramid pattern

Python program to print star pyramid pattern

Floyd’s triangle number pattern using for loop in C

Floyd’s triangle pattern using nested for loop in Java

Floyd’s triangle pattern using nested while loop in Java

C program to display alphabet pattern

Hollow Triangle Pattern using nested while loop in C

C++ program to Integrated triangle patterns using for loop

C program to Display diamond number pattern using while loop

C program to triangle number pattern

C program to triangle number pattern