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

int main()
{
    char n[] = "  Huy  Dong      Alo   ";
    int i,len;
    len = strlen(n);

// Removing spaces at the beginning of string
    while(1){
        if (n[0] == 32){
            for(i = 0;i < len-1;i++){
                n[i] = n[i+1];
            }
            len--;
        }
        else break;
    }

// Removing spaces at the ending of string
    while(1){
        if (n[len-2] == 32){
            n[len-2] = 0;
            len--;
        }
        else break;
    }

// Removing spaces between 2 words
    for(i = 1; i < len-1;i++){
        if (n[i] == 32) {
            if(n[i+1] == 32){
                for(int j = i; j < len;j++) n[j] = n[j+1];
                i--;
                len--;
            }
        }
    }

// UPPERCASE
    for(i = 0; i < len ; i++){
        if ((n[i]>96) && (n[i]<123)) n[i] -= 32;
    }
    printf("%s\nDo dai la: %d",n,len);
    return 0;
}