CPP to remove redundant spaces

#include<stdio.h>
int main() {
   char string[50];
   int i=0, j, check;
   printf("Enter any statement: ");
   gets(string);
   while(string[i]!='\0') {
      check=0;
      if(string[i]==' ') {
         j=i;
         while(string[j-1]!='\0') {
            string[j] = string[j+1];
            j++;
         }
         check = 1;
      }
      if(check==0)
      i++;
   }
   printf("
Sentence without spaces: %s", string);
   getch();
     return 0;
}