2

3    4

4    5   6

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

void main()
{
    int i,j,n;
    clrscr();
    printf("Enter how many line you need to make pyramid = ");
    scanf("%d",&n);
   
    for(i=1;i<=n;i++)
    {
       for(j=1;j<=i;j++)
       printf("%4d",i+j);
       printf("\n");
    }

    getch();
}

///////////////////////////////////////////////////////////////////////////
Copy & paste this code in your TC & run, then you will get output.......
If you have any problem please comment below.........