Problem : 2024 ( C语言合法标识符 ) Judge Status : Accepted
RunId : 6000739 Language : C Author : qq1203456195
Code Render Status : Rendered By HDOJ C Code Render Version 0.01 Beta
RunId : 6000739 Language : C Author : qq1203456195
Code Render Status : Rendered By HDOJ C Code Render Version 0.01 Beta
1 #include <stdio.h> 2 #include <ctype.h> 3 int main() 4 { 5 int n,i,f; 6 char str[51]; 7 scanf("%d",&n); 8 getchar(); 9 while (n--) 10 { 11 gets(str); 12 f=1; 13 if(str[0]!='_'&&!isalpha(str[0])) f=0; 14 i=1; 15 while (str[i]!='\0'&&f==1) 16 { 17 if(str[i]!='_'&&!isalnum(str[i])) f=0; 18 i++; 19 } 20 if(f==0) 21 printf("no\n"); 22 else 23 printf("yes\n"); 24 } 25 return 0; 26 }