View Compilation Error

0_0_38331034_7315.cpp:6:7: error: storage size of 'a' isn't known
 int a[];
       ^
0_0_38331034_7315.cpp: In function 'int main()':
0_0_38331034_7315.cpp:11:17: error: expected primary-expression before ';' token
         int s = ;
                 ^
0_0_38331034_7315.cpp:12:21: error: expected primary-expression before ';' token
         for(int i = ; i < m; i++) {
                     ^
0_0_38331034_7315.cpp:18:24: error: expected '}' at end of input
             puts("Yes");
                        ^
0_0_38331034_7315.cpp:18:24: error: expected '}' at end of input
0_0_38331034_7315.cpp:18:24: error: expected '}' at end of input