C PROGRAMMING PROGRAM • PATTERN PROGRAMS

Print Floyd's Triangle

Learn how to print floyd's triangle using a clear C program.

IntermediateNested loopsRunning numberNumber pattern

PROBLEM UNDERSTANDING

Input and expected output

Sample input

Sample output

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

int main(void)
{
    int rows, value = 1;

    printf("Enter number of rows: ");
    scanf("%d", &rows);
    for (int row = 1; row <= rows; row++) {
        for (int column = 1; column <= row; column++) printf("%d ", value++);
        printf("\n");
    }
    return 0;
}

CURRENT STEP

Select Start to walk through the important lines.

SELECTED LINE

No line selected

EXPECTED OUTPUT FOR THE SAMPLE

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Maintain one running number while each row prints one more value than the previous row.
Display the computed result.

Maintain one running number while each row prints one more value than the previous row.

EFFICIENCY

Time and space complexity

Time complexity

O(n²)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

Check this

Use the correct format specifier for every variable.

Check this

Initialize variables before using their values.

Check this

Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.