how to get rid of all spaces in a string in c

1#include<stdio.h>
2
3char *remove_white_spaces(char *str)
4{
5    int i = 0, j = 0;
6    while (str[i])
7    {
8        if (str[i] != ‘ ‘)
9            str[j++] = str[i];
10        i++;
11    }
12    str[j] = ‘\0’;
13    return str;
14}
15
16int main()
17{
18    char str[50];
19    printf("\n\t Enter a string : ");
20    gets(str);
21    remove_white_spaces(str);
22    printf(“%s”,str);
23    return 0;
24}