1.
#include <stdio.h>

int main()
{
  int i, nNum, nMin, nMax;
  for(i = 1; i <= 10; i++){
    for(;;){
      printf("[%02d] ", i);
      if(scanf("%d", &nNum)) break;
      scanf("%*s");
    }
    if(i == 0 || nNum < nMin) nMin = nNum;
    if(i == 0 || nNum > nMax) nMax = nNum;
  }
  printf("Max: %d\n", nMax);
  printf("Min: %d\n", nMin);
  return 0;
}