C PROGRAMMING PROGRAM • PATTERN PROGRAMS

Print an Increasing Number Triangle

Learn how to print an increasing number triangle using a clear C program.

IntermediateNested loopsColumn valueNumber 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;

    printf("Enter number of rows: ");
    scanf("%d", &rows);
    for (int row = 1; row <= rows; row++) {
        for (int value = 1; value <= row; value++) 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.
Print column numbers from one through the current row number.
Display the computed result.

Print column numbers from one through the current row number.

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.