View Compilation Error

0_0_17064457_9013.cpp:3:5: error: expected constructor, destructor, or type conversion before '(' token
 gets(s);
     ^
0_0_17064457_9013.cpp:4:1: error: expected unqualified-id before 'for'
 for(i=0;s[i];i++)
 ^
0_0_17064457_9013.cpp:4:9: error: 's' does not name a type
 for(i=0;s[i];i++)
         ^
0_0_17064457_9013.cpp:4:14: error: 'i' does not name a type
 for(i=0;s[i];i++)
              ^
0_0_17064457_9013.cpp:9:7: error: expected constructor, destructor, or type conversion before '(' token
 printf("共有字母%d 数字%d\n",zm,sz);
       ^