View Compilation Error

0_0_28338376_29295.cpp:3:11: error: '::main' must return 'int'
 void main(){
           ^
0_0_28338376_29295.cpp: In function 'int main()':
0_0_28338376_29295.cpp:21:17: error: 'else' without a previous 'if'
                 else{
                 ^
0_0_28338376_29295.cpp:27:20: error: 't' was not declared in this scope
                 if(t)
                    ^
0_0_28338376_29295.cpp:30:18: error: 'sum' was not declared in this scope
                  sum/=c1;
                  ^
0_0_28338376_29295.cpp:30:23: error: 'c1' was not declared in this scope
                  sum/=c1;
                       ^
0_0_28338376_29295.cpp:35:20: error: 't' was not declared in this scope
                 if(t)
                    ^
0_0_28338376_29295.cpp:38:21: error: 'sum' was not declared in this scope
                     sum/=c1;
                     ^
0_0_28338376_29295.cpp:38:26: error: 'c1' was not declared in this scope
                     sum/=c1;
                          ^
0_0_28338376_29295.cpp: At global scope:
0_0_28338376_29295.cpp:44:2: error: expected unqualified-id before 'return'
  return 0;
  ^
0_0_28338376_29295.cpp:45:1: error: expected declaration before '}' token
 }
 ^