C / C++ / MFC

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#define false 1
#define true 0

char* my_strdelupper(char* s){

      int i,j, len;
      char aux[100];
      char debuging;

      len = strlen(s);
      j = 0;
      for (i = 0; *(s + i) != '\0' < len; i++){
          if (!isupper(*(s+i))){
              printf("%c",*(s+i));
              debuging = *(s + i);
              *(aux + j) = debuging;
             j++;
          }
      }
      *(aux + j) = '\0';
      printf("\n");
      puts(aux);

      return strcpy(aux, aux);
}

int main()
{
  char *s3="Quem quer casar com um programador?";
  printf("%s\n",my_strdelupper(s3)); /* aria, sabes que é s o meu "rande mor " */

  return 0;
}

#include <iostream>
using namespace std;

int main()
{
int count, j, elements[50], search_num, first, last, mid;
cout<<"Enter the total number of elements :";
cin>>count;

cout<<"\nEnter ">>count>>" numbers:\n";
for (j=0; j<count; j++)
{
cin>>elements[j];
}

cout<<"\nWhich number that you want to search: ";
cin>>search_num;
first = 0;

last = count-1;
mid = (first+last)/2;

// binary search
while (first <= last)
{
if(elements[mid] > search_num){
first = mid + 1;
}

else if(elements[mid] == search_num){
cout<<search_num<<" found in array at "<<mid+1<<"\n";
break;
}
else {
last = mid - 1;
}

mid = (first + last)/2;
}

if(first > last){
cout<<search_num<<" Not found in an array";
}
return 0;
}