Drawing Diamond Patterns in C Program

Introduction

The C programming language is a procedural programming language. Between 1969 and 1973, Dennis Ritchie worked on the project. It was created primarily as a system programming language for developing operating systems.

In this tutorial we are going to learn to draw or print different variation of diamond pattern using C programming language.

In order to understand the code given below you’ve got to have prior knowledge and or understanding of the following topics:

• C for Loop
• C if…..else Statements
• C while Loop
• C break and continue

If you have a sound knowledge and understanding of what the functions of the concepts are then there will be no difficulty in understanding the given codes for different variation of diamond pattern in c programming language. With all that said lets get coding!

Diamond made of *

The following how we will make a program that prompts the user for the upper-half diamond’s row size before printing the diamond pattern of stars. For example, if the user selects 5 as the row size, a diamond of stars with a dimension of 5*2-1 or 9 rows is displayed. This same concept applies for all the other diamond variations presented here in this tutorial.

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
int main()
{
    int i, j, row, space;
    printf("Enter Number of Rows: ");
    scanf("%d", &row);
    space = row-1;
    for(i=1; i<=row; i++)
    {
        for(j=1; j<=space; j++)
            printf(" ");
        space--;
        for(j=1; j<=(2*i-1); j++)
            printf("*");
        printf("\n");
    }
    space = 1;
    for(i=1; i<=(row-1); i++)
    {
        for(j=1; j<=space; j++)
            printf(" ");
        space++;
        for(j=1; j<=(2*(row-i)-1); j++)
            printf("*");
        printf("\n");
    }
    getch();
    return 0;
}

Output for Diamond made of *

To print a diamond design that spreads to the row-1 line, input the number of rows, say 7. That is, with row number 7, it will print a 6-line diamond pattern, as demonstrated in the output below:

Diamond made of Numbers

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

int main()
{
    int i, j, row, space, num=1;
    printf("Enter Number of Rows: ");
    scanf("%d", &row);
    space = row-1;
    for(i=1; i<=row; i++)
    {
        for(j=1; j<=(space); j++)
            printf(" ");
        space--;
        for(j=1; j<=(2*i-1); j++)
        {
            printf("%d", num);
            num++;
        }
        printf("\n");
        num=1;
    }
    space = 1;
    for(i=1; i<=(row-1); i++)
    {
        for(j=1; j<=(space); j++)
            printf(" ");
        space++;
        for(j=1; j<=(2*(row-i)-1); j++)
        {
            printf("%d", num);
            num++;
        }
        printf("\n");
        num=1;
    }
    getch();
    return 0;
}

Output for Diamond made of Numbers

Diamond made of Alphabets

Method 1 for Diamond made of Alphabets

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



// c program for printing a diamond pattern ....
// ... made with lowercase alphabets

int main()
{
    int i, j, row, space;
    char ch='A';
    printf("Enter Number of Rows: ");
    scanf("%d", &row);
    space = row-1;
    for(i=1; i<=row; i++)
    {
        for(j=1; j<=(space); j++)
            printf(" ");
        space--;
        for(j=1; j<=(2*i-1); j++)
        {
            printf("%c", ch);
            ch++;
        }
        ch='A';
        printf("\n");
    }
    space = 1;
    for(i=1; i<=(row-1); i++)
    {
        for(j=1; j<=(space); j++)
            printf(" ");
        space++;
        for(j=1; j<=(2*(row-i)-1); j++)
        {
            printf("%c", ch);
            ch++;
        }
        ch='A';
        printf("\n");
    }
    getch();
    return 0;
}

Output for Diamond made of Alphabets

Method 2 Diamond made of Alphabets

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

// c program for printing a diamond pattern ....
// ... made with lowercase alphabets

int main()
{
    int i, j, row, space;
    char ch='a';
    printf("Enter Number of Rows: ");
    scanf("%d", &row);
    space = row-1;
    for(i=1; i<=row; i++)
    {
        for(j=1; j<=(space); j++)
            printf(" ");
        space--;
        for(j=1; j<=(2*i-1); j++)
        {
            printf("%c", ch);
            ch++;
        }
        ch='a';
        printf("\n");
    }
    space = 1;
    for(i=1; i<=(row-1); i++)
    {
        for(j=1; j<=(space); j++)
            printf(" ");
        space++;
        for(j=1; j<=(2*(row-i)-1); j++)
        {
            printf("%c", ch);
            ch++;
        }
        ch='a';
        printf("\n");
    }
    getch();
    return 0;
}

Output for Diamond made of Alphabets