Create hollow diamond star pattern in C

Create hollow diamond star pattern in C

In this tutorial, we will discuss Create hollow diamond star pattern in C language

Hollow diamond star pattern using for loop

In this program, we are going to learn how to display  hollow diamond star pattern  using for loop  in C programming language

Here, we display a hollow diamond star pattern program with coding using nested for loop and also we get input from the user using scanf() function in C language

The user can provide numbers as they wish and get the hollow diamond star pattern according to their input.

Program 1

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

int main()
{
    int i,j,rows;
    printf("Please enter the number of rows\n");
    scanf("%d",&rows);//get input from user
    //loop for display upper half part of the pattern
for(i=1; i<=rows; i++){
    for(j=i; j<=rows; j++){
       printf("*");//print star
    }

    for(j=1; j<=(2*i-2); j++){
       printf(" ");//print space
    }
    for(j=i; j<=rows; j++){
       printf("*");//print star
    }
    printf("\n");
}
    //loop for printing lower half part  of the pattern
for(i=1; i<=rows; i++){
    for(j=1; j<=i; j++){
       printf("*");//print star
    }

    for(j=(2*i-2); j<(2*rows-2); j++){
       printf(" ");//print space
    }
    for(j=1; j<=i; j++){
       printf("*");
    }
    printf("\n");//move to next line
    }
    return 0;
    }

When the above code executed, it produces the following results

Enter the number of rows: 6
************
*****    *****
****        ****
***            ***
**                **
*                    *
**                **
***            ***
****        ****
*****    *****
************

Hollow diamond star pattern using while loop

In this program, we are going to learn how to displayed  hollow diamond star pattern using while loop  in C programming language

Here, we display a hollow diamond star pattern program with coding using nested while loop and also we get input from the user using scanf() function in C  language.

The user can provide numbers as they wish and get the  hollow diamond star pattern according to their input

Program 2

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

int main()
{
    int i,j,rows;
    printf("Enter the number of rows: \n");
    scanf("%d",&rows);
    i=1;
while(i<=rows){
j=i;
    while(j<=rows){
       printf("*");//print star
        j++;
    }
j=1;
    while(j<=(2*i-2)){
       printf(" ");//print space
        j++;
    }
    j=i;
    while(j<=rows){
       printf("*");//print star
        j++;
    }
    printf("\n");
     i++;
}
    //loop for printing lower half part  of the pattern
    i=1;
while(i<=rows){
j=1;
    while(j<=i){
       printf("*");//print star
        j++;
    }
    j=(2*i-2);
    while(j<(2*rows-2)){
       printf(" ");//print space
        j++;
    }
    j=1;
    while(j<=i){
       printf("*");
        j++;
    }
    printf("\n");//move to next line
     i++;
    }

    return 0;
}

When the above code executed, it produces the following results

Enter the number of rows: 6
************
*****    *****
****        ****
***            ***
**                **
*                    *
**                **
***            ***
****        ****
*****    *****
************

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