Help! (Beginner)

[aliplayer1]

Hello. Could anyone tell me why does the code below not run properly? I intended to print a pyramid using * but the output is strange.

#include <stdio.h>
int main ( )
{
    int i , j , rows ;


    printf("Enter the number of rows:");
    scanf("%d", &rows);

    for ( i = 1 ; i <= rows ; i++);
    {
        for ( j = 1 ; j <= rows - i ; j++)
            printf("  ");

        for ( j = 1 ; j <= 2 *i - 1 ; j++)
            printf("* ");

        printf("\n");
    }
}

For example, if I run this code and give "rows" a value of 5 it outputs 11 stars one after each other. Help me, please.

 

[John Joe]

Can you show the output?

 

[Commodore]

Hello aliplayer1,

Well, the output is strange due to the semicolon that you wrote in the first "for loop". If you quit that semicolon, the output will be the desired one.

Should be this way (without modifying the rest of parts of your code):

#include <stdio.h>
int main ( )
{
    int i , j , rows ;


    printf("Enter the number of rows:");
    scanf("%d", &rows);

    for ( i = 1 ; i <= rows ; i++)
    {
        for ( j = 1 ; j <= rows - i ; j++)
            printf("  ");

        for ( j = 1 ; j <= 2 *i - 1 ; j++)
            printf("* ");

        printf("\n");
    }
}