Floyd Triangle

Q. Write a C program to print the following number pyramid or Floyd triangle:

       1
      2 3
     4 5 6
    7 8 9 10

Ans.

/*c program to print the number pyramid*/
#include<stdio.h>
int main()
{
 int num,r,c,sp,i=1;
 printf("Enter any number : ");
 scanf("%d", &num);
 for(r=1; r<=num; r++)
 {
  for(sp=1; sp<=num-r; sp++)
    printf(" ");
  for(c=1; c<=r; c++,i++)
    printf("%d ",i);  
  printf("\n");
 }
 return 0;
}

The output of above program would be:

Figure: Screen shot for Floyd triangle C program