fun(char s[],chat t[]){ int i=-1;while(i++,s[i]==t[i]＆＆s[i]!='\0');return (s[i]=='\0'＆＆[i]=='\0');}

fun(char s[],chat t[]){ int i=-1;while(i++,s[i]==t[i]＆＆s[i]!='\0');return (s[i]=='\0'＆＆[i]=='\0');}
fun(char s[],chat t[])
{ int i=-1;
while(i++,s[i]==t[i]＆＆s[i]!='\0');
return (s[i]=='\0'＆＆[i]=='\0');
}

fun(char s[],chat t[]){ int i=-1;while(i++,s[i]==t[i]＆＆s[i]!='\0');return (s[i]=='\0'＆＆[i]=='\0');}
while(i++,s[i]==t[i]＆＆s[i]!='\0'); //不对
while(条件表达式)是这么用的,楼主的题干有问题