View Compilation Error

0_0_23793643_2018.cpp: In function 'int main()':
0_0_23793643_2018.cpp:21:1: error: expected primary-expression before '%' token
 %0
 ^
0_0_23793643_2018.cpp:21:2: error: expected '}' at end of input
 %0
  ^
0_0_23793643_2018.cpp:21:2: error: expected '}' at end of input