View Compilation Error

0_0_24385995_9285.cpp: In function 'int main()':
0_0_24385995_9285.cpp:11:15: error: expected initializer before '-' token
       int flag-1;
               ^
0_0_24385995_9285.cpp:14:29: error: 'flag' was not declared in this scope
           if(a[i+1]<a[i])  {flag=0;break;}
                             ^
0_0_24385995_9285.cpp:16:21: error: 'flag' was not declared in this scope
       if (a[n-1]>0) flag=0;
                     ^
0_0_24385995_9285.cpp:17:10: error: 'flag' was not declared in this scope
       if(flag)  printf("yeah~ I escaped ^_^\n");
          ^