print triangle useing 1,2,3..

#include<stdio.h>
int main()
{
 int num,r,c,sp;
 printf("\tthis code made by hamza on letsdoprogramminginc.blogspot.com\n");
 printf("Enter max number : ");
 scanf("%d", &num);
 for(r=0; r<=num; r++)
 {
   for(sp=r; sp<num; sp++)
       printf(" ");
   for(c=r; c>=0; c--)
       printf("%d",c);
   for(c=1; c<=r; c++)
       printf("%d",c);
   printf("\n");
 }
 getch();
 return 0;
}

related program
out put is :

A B C D E F G F E D C B A
A B C D E F F E D C B A
A B C D E E D C B A
A B C D D C B A
A B C C B A
A B B A
A A

*This program written in C Language*/
#include
main()
{
char i,j,k;
for(i='G';i>='A';i--)
{
for(j='A';j<=i;j++)
{
printf("%c",j);
}
for(k=i;k>='A';k--)
{
printf("%c",k);
}
printf("\n");
}
}