Another simple program using for loop

Code:

---

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




int main()
{
    int space, row, stars, number_of_stars;




    printf("How many stars you want?");
    scanf(" %d", &number_of_stars);
    for (row = 1; row <= number_of_stars; row++) {
        for (space = 1; space <= number_of_stars; space++) {
            printf(" ");
        }
        for (stars = 1; stars <= row; stars++) {
            printf(" *");
        }
        printf("\n");
        number_of_stars--;
    }
    return 0;
}

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The output is a simple pyramid but it skips one row/line. I want the user to type how many rows you want for example I type '12'. It only shows half of it.

You are using the number_of_stars variable for both the number of rows you want and the number of spaces to start each line with. In order to have the correct number of spaces at the start of each line (in addition to the space which is included before each star) you are decrementing number_of_stars but this will have the effect of reducing the number of rows to be printed since the same variable is used. Instead of decrementing, change line 17 to

Code:

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for (space = 1; space <= number_of_stars - row; space++) {

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I would also suggest renaming number_of_stars to number_of_rows since you are asking the user for how many rows they want, not how many stars in total.

A slight modification of your code and it is working well.Just carefully go through the program and see how it works.

Code:

---

#include <stdio.h>
#include <stdlib.h>
 
int main()
{
    int space, row, stars, i,number_of_stars;


    printf("How many rows you want?");
    scanf(" %d", &row);


    for (i = 1; i <= row; i++)
        {
        number_of_stars=i;
               
        for (space = 1; space <=row-i; space++)
                        {
                        printf(" ");
                        }


        for (stars = 1; stars <= number_of_stars; stars++)
                        {
                        printf(" *");
                        }


        printf("\n");
    }
    return 0;
}

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Thank you guys. Love you all <3

Quote:

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Originally Posted by manishfzr1995

A slight modification of your code and it is working well.Just carefully go through the program and see how it works.

Code:

---

#include <stdio.h>
#include <stdlib.h>
 
int main()
{
    int space, row, stars, i,number_of_stars;


    printf("How many rows you want?");
    scanf(" %d", &row);


    for (i = 1; i <= row; i++)
    {
        number_of_stars=i;
       
        for (space = 1; space <=row-i; space++)
            {
                        printf(" ");
                        }


        for (stars = 1; stars <= number_of_stars; stars++)
            {
                        printf(" *");
                        }


        printf("\n");
    }
    return 0;
}

---

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Ohh I just noticed why did you put another variable there? I could just use number_of_stars if it's equal to 'i' anyway? or if I used number_of_stars to be scanned?