View Compilation Error

0_0_17508583_10297.cpp:32:1: error: stray '\243' in program
 return 0；     
 ^
0_0_17508583_10297.cpp:32:1: error: stray '\273' in program
0_0_17508583_10297.cpp: In function 'long long int gcd(int, int, int&, int&)':
0_0_17508583_10297.cpp:9:9: error: return-statement with no value, in function returning 'long long int' [-fpermissive]
         return ;  
         ^
0_0_17508583_10297.cpp: In function 'int main()':
0_0_17508583_10297.cpp:33:1: error: expected ';' before '}' token
 }
 ^