Star Pattern Program in C

/*Star Pattern Program in C

Author - Chinmay Mahajan*/

#include<stdio.h>
#include<conio.h>

void main()
{
int i,j,k,m,o,f,n;
clrscr();
printf("Enter value of n \n");
scanf("%d",&n);
k=n;
o=1;
for(i=0;i<n;i++) //for number of lines
{

for(j=0;j<k;j++) //for left spacing
{
printf("_");
}
for(m=0;m<o;m++) //for Printing *
{
printf(" *");
}

for(f=0;f<k;f++)  //for right spacing
{
printf("_");
}
printf("\n"); //new line
k--;
o++;
}//outer for
}//main