View Compilation Error

0_0_19904494_6200.cpp: In function 'int main()':
0_0_19904494_6200.cpp:89:7: error: 'else' without a previous 'if'
       else if(str[0]=='8'||str[0]=='9')
       ^
0_0_19904494_6200.cpp: At global scope:
0_0_19904494_6200.cpp:100:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_19904494_6200.cpp:101:1: error: expected declaration before '}' token
 }
 ^