Soccer tournament, partitioning games

[transcendental]

//This program is trying to solve soccer team combination problem for troplosti
//for 5 teams per group
#include <iostream.h>
#include <stdlib.h>
#include <stdio.h>
//Number of combinations for 5 teams= 5*4/2 = 10

void checkrepeat();


char array[5]={'A','B','C','D','E'};
int endnum=0;
char comb[10][5];

int main()
{

      for(int cnt=0;cnt<5;++cnt)
      {
          sprintf(comb[endnum],"%c %c",array[0],array[1]);
          printf("%s\n", comb[endnum]);
          ++endnum;
          
          char swap=array[0];
          array[0]=array[1];
          array[1]=array[2];
          array[2]=array[3];
          array[3]=array[4];
          array[4]=swap;
      }
      for(int cnt=0;cnt<3;++cnt)
      {
          sprintf(comb[endnum],"%c %c",array[cnt],array[cnt+2]);
          printf("%s\n", comb[endnum]);
          ++endnum;
      }
      for(int cnt=0;cnt<2;++cnt)
      {
          sprintf(comb[endnum],"%c %c",array[cnt],array[cnt+3]);
          printf("%s\n", comb[endnum]);
          ++endnum;
      
      }
      checkrepeat();
      system("PAUSE");
      
      return 0;
}
//=====================================================
//function for checking combination doesn't repeat itself.
void checkrepeat()
{
    for(int cnt=0;cnt<10;++cnt)
    {
        for(int cnt1=0;cnt1<10;++cnt1)
        {
            if(cnt==cnt1) continue;
            if(strcmp(comb[cnt],comb[cnt1])== 0) 
                printf("Error at %d & %d",cnt, cnt1);
        }
    }


}

Here's the output,
=============
A B
B C
C D
D E
E A
A C
B D
C E
A D
B E