C Program To Draw Pyramid of Numbers, using For Loop

Lets write a C program to draw / display / print a four row pyramid formed from numbers 1 to 10.

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Video Tutorial: C Program To Draw Pyramid of Numbers, using For Loop

Source Code: C Program To Draw Pyramid of Numbers, using For Loop

#include<stdio.h>
int main()
{
    int num = 4, row, col, space, count = 1;
    float i = -7;


    for(row = 1; row <= num; row++)
    {
        for(space = i; space <= (num-row); space++)
        {
            printf(" ");
        }
        for(col = 1; col <= row; col++)
        {
            printf(" %d ", count++);
        }
        i += 0.8;

        printf("\n");
    }

    return 0;
}

Output

                    1
                  2  3
                 4  5  6
               7  8  9  10

Logic To Draw Pyramid of Numbers, using For Loop

Here we already know that the Pyramid we need to print has 4 rows and is formed of numbers 1 to 10.

Outer for loop selects the row number and the number of elements to be printed for that particular selected row. For example, 1st row has 1 element. 2nd row has 2 elements. 3rd row has 3 elements and so on. So the row number and the number of elements in that particular row are always the same.

First inner for loop prints the adequate spacing required for the pyramid. Second inner for loop prints the actual numbers.

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