View Compilation Error

0_0_2529381_23069.cpp: In function `void change()':
0_0_2529381_23069.cpp:36: error: `strrev' undeclared (first use this function)
0_0_2529381_23069.cpp:36: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2529381_23069.cpp: In function `int main()':
0_0_2529381_23069.cpp:44: error: cannot convert `bool' to `const char*' for argument `1' to `int scanf(const char*, ...)'
0_0_2529381_23069.cpp:44: error: expected `)' before '{' token