View Compilation Error

817092_0_0_9646.cpp: In function `int main()':
817092_0_0_9646.cpp:14: error: invalid types `char[int]' for array subscript
817092_0_0_9646.cpp:15: error: invalid conversion from `char' to `const char*'
817092_0_0_9646.cpp:15: error:   initializing argument 1 of `int change(const char*)'
817092_0_0_9646.cpp:20: error: invalid types `char[int]' for array subscript
817092_0_0_9646.cpp:21: error: invalid conversion from `char' to `const char*'
817092_0_0_9646.cpp:21: error:   initializing argument 1 of `int change(const char*)'
817092_0_0_9646.cpp: At global scope:
817092_0_0_9646.cpp:32: error: expected unqualified-id before "return"
817092_0_0_9646.cpp:32: error: expected `,' or `;' before "return"
817092_0_0_9646.cpp:33: error: expected declaration before '}' token