View Compilation Error

0_0_22808536_2349.cpp: In function 'void gys(int, int)':
0_0_22808536_2349.cpp:18:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
     return num1;
            ^
0_0_22808536_2349.cpp: In function 'int main()':
0_0_22808536_2349.cpp:26:35: error: invalid use of void expression
         printf("%d\n",gys(m-1,num));
                                   ^