View Compilation Error

0_0_33463327_7876.cpp: In function 'int main()':
0_0_33463327_7876.cpp:55:36: error: 'fun' was not declared in this scope
     printf("%d\n",fun(len1-1,len2-1));
                                    ^
0_0_33463327_7876.cpp:58:22: error: a function-definition is not allowed here before '{' token
 int fun(int i, int j){
                      ^
0_0_33463327_7876.cpp:74:1: error: expected '}' at end of input
 }
 ^