[刷题] 字符串去空格

如题

#include<stdio.h>
int main() {
    int i,j=0;
    char a[]="How are you";
    for(i=0; a[i]; i++)
        if(a[i]!=' ') a[j++]=a[i];
    a[j]='';
    printf("%s
",a);
}