Diamond with for loop

Question

Hey,

How can i write a program that gets number of horizontal stars and displays a diamond.
for example, input 5 , output :
*
***
*****
***
*

Answer 1

//For upper triangle
● run an outer loop for k from 1 to n [for number of rows]
● inside it run a loop for initial spaces [from 1 to k]
● make 1 more loop inside outer loop for stars[from 1 to 2*k-1]
● go to next line

Similarily, U can form logic for lower triangle 👍

Answer 2

Amir
For main row stars, these are visible to appear odd number of times
//so its better to use 2n-1 Or 2n+1 form. ☺
//good, code works fine 👍

Answer 3

I recommend reviewing this thread to further understand recommended alternatives to scanf().

https://stackoverflow.com/questions/865284/what-is-the-easiest-way-to-get-an-int-in-a-console-app

Answer 4

You just completed the C tutorial (congratulations 🎈), so you should at least have some idea what to do. Please show your attempt first before you ask others to write the code for you.

Answer 5

#include <stdio.h>
int main () {
int X=3 ; // Totalrows
int x , y , z; // x = Rows , y = Space z = Stars
for (x = 1;x <= X ; x++) {
for (y = X - x;y >= 1 ;y--) {
printf(" ");

}
for (z = 1;z<=2*x-1;z++) {
printf("*");
}
printf("\n"); // First half of triangle we need to go the next line
}
for (x = X -1;x>=1;x--) {
for (y = 1; y <= X - x ; y++) {
printf(" ");

}
for (z = 1;z<=2*x-1;z++) {
printf("*");

}
printf("\n");

}
}

Dear friends,

This is how i done the diamond , but i want to how it is possible to enter the number of main row stars

Answer 6

I was able to use your code mostly as it was by adding lines 4 and 5 and making a slight change to line 7.

https://code.sololearn.com/c4gjkz7qx62v/?ref=app

Answer 7

Thank you David.
You actually solved my problem.