Printing triangle in C

Question

I am new to C and I have this program where I am trying to print a triangle based on its height as such:

 /\
/__\

So if the height is 2, then there are 2 of '/', '\' and '_'.

So I have written these chunk of codes:

#include <stdio.h>
int main(void)
{
    int noOfRows; 
    printf("Enter height: ");
    scanf("%d", &noOfRows);

    int counter, rowNumber;
    for (rowNumber = 0 ; rowNumber < noOfRows; rowNumber++)
    {
        // For each row, insert numberOfRows - N spaces before printing
        for (counter = 0 ; counter < noOfRows- rowNumber ; counter++)
            printf(" ");

        // For each row, print N times the character
            printf("/");

        for (counter = 0; counter < noOfRows; counter++)
            printf("\\");

        printf(" ");

        printf("\n");
    }

    return 0;
}

However it is giving me an output of such when I enter 3 as the height.

  /\\\
 /\\\
/\\\

I want to get the '\' with more space as each new row comes up but I am not sure how the for loop should be modified such that the triangle is formed correctly. Please let me know if I should add anymore question to make it clearer.

I made changes to the code and currently have this:

#include <stdio.h>
int main(void)
{
    int noOfRows; 
    printf("Enter height: ");
    scanf("%d", &noOfRows);

    int counter, rowNumber;
    for (rowNumber = 0 ; rowNumber < noOfRows; rowNumber++)
    {
        // For each row, insert numberOfRows - N spaces before printing
        for (counter = 0 ; counter < noOfRows- rowNumber ; counter++)
            printf(" ");

        // For each row, print N times the character
            printf("/");

        for (counter = 0 ; counter < rowNumber ; counter++)
            if(rowNumber >= 1)  
                for(int j=0; j<counter +1; j++)
                    printf(" ");

        if(rowNumber != 0)
            printf(" ");

            printf("\\");

        printf("\n");
    }

    return 0;
}

and now my current output is as such:

Height: 3
  /\
 /  \
/    \

Height: 5

    /\
   /  \
  /    \
 /       \
/           \

What did I do wrong in the code that is making some of the '\' go even further away?

Answer 1

You can use only two loop to print this pattern by using if else. in if else you can use multiple condition for space, backslash,forward-slash and underscore.

1 #include<stdio.h>
  2 
  3 int main()
  4 {
  5         int n;
  6         int i,j,k;
  7         printf("Enter hight of trangle\n");
  8         scanf("%d",&n);
  9         for(i=0;i<n;i++,printf("\n"))
 10         {
 11                 for(j=-n;j<=n;j++)
 12                 {
 13                         if(j<0) k=-j;
 14                         else    k=j;
 15 
 16                         if(j==0);
 17                         else if((j<0)&&(k==(i+1)))
 18                                 printf("/");
 19                         else if((j>0)&&(k==(i+1)))
 20                                 printf("\\");
 21                         else if((i+1)==n)
 22                                 printf("_");
 23                         else
 24                                 printf(" ");
 25                 }
 26         }
 27 }