Thread: Write a code for to print grouping of numbers

I am first year computer science student. Currently I am learning C language. I am trying to write C code for to print the combination of given numbers. If you have the example for this number combinations then please give me that. Please reply me as soon as possible.

Try out this code, when you run this program you get the Combination of numbers as a output result:

Code:

#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,k,l,m;
clrscr();
for(i=0;i<4;i++)
{
for(j=i+1;j<=4;j++)
{
printf("%d",j);
}
for(k=1;k<=i;k++)
{
printf("%d",k);
}
printf("n");
for(k=i;k>=1;k--)
{
printf("%d",k);
}
for(j=4;j>=i+1;j--)
{
printf("%d",j);
}
getch();
}

Try this:

Code:

# include <stdio.h>
# include <conio.h>
 
/* Function to swap values at two pointers */
void swap (char *x, char *y)
{
    char temp;
    temp = *x;
    *x = *y;
    *y = temp;
}
 
void permute(char *a, int i, int n)
{
   int j;
   if (i == n)
     printf("%sn", a);
   else
   {
        for (j = i; j <= n; j++)
       {
          swap((a+i), (a+j));
          permute(a, i+1, n);
          swap((a+i), (a+j)); //backtrack
       }
   }
}
 
/* Driver program to test above functions */
int main()
{
   char a[] = "ABC";
   permute(a, 0, 2);
   getchar();
   return 0;
}