View Compilation Error

0_0_24944095_23170.cpp:2:11: error: '::main' must return 'int'
 void main()
           ^
0_0_24944095_23170.cpp: In function 'int main()':
0_0_24944095_23170.cpp:84:1: error: expected '}' before 'else'
 else if(b<10)
 ^