View Compilation Error

0_0_17181362_22032.cpp: In function 'int main()':
0_0_17181362_22032.cpp:10:19: error: lvalue required as left operand of assignment
    else if((a=1&&b=n)||(a=n&&b=1)) c=0;
                   ^
0_0_17181362_22032.cpp:10:31: error: lvalue required as left operand of assignment
    else if((a=1&&b=n)||(a=n&&b=1)) c=0;
                               ^
0_0_17181362_22032.cpp:12:22: error: lvalue required as left operand of assignment
    else if(a+1=b||b+1=a) c=1;
                      ^
0_0_17181362_22032.cpp:17:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_17181362_22032.cpp:37:1: error: expected '}' at end of input
 }
 ^
0_0_17181362_22032.cpp:37:1: error: expected '}' at end of input