View Compilation Error

0_0_13509947_11607.cpp: In function 'void change(char*, char*)':
0_0_13509947_11607.cpp:49:13: error: expected '(' before '%' token
           if%2
             ^
0_0_13509947_11607.cpp:49:14: error: expected '}' at end of input
           if%2
              ^
0_0_13509947_11607.cpp:49:14: error: expected '}' at end of input
0_0_13509947_11607.cpp:49:14: error: expected '}' at end of input