View Compilation Error

0_0_33437250_8816.cpp: In function 'int main()':
0_0_33437250_8816.cpp:47:31: error: expected primary-expression before '%' token
                     r = mid-1;%0
                               ^
0_0_33437250_8816.cpp:47:32: error: expected '}' at end of input
                     r = mid-1;%0
                                ^
0_0_33437250_8816.cpp:47:32: error: expected '}' at end of input
0_0_33437250_8816.cpp:47:32: error: expected '}' at end of input
0_0_33437250_8816.cpp:47:32: error: expected '}' at end of input