Compilare: main.cpp: In member function 'long long int gfg::power(long long int, long long int, long long int)': main.cpp:25:6: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (y % 2 == 0) ^~ main.cpp:28:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' return mult(x , t , C); ^~~~~~ main.cpp: In function 'int main()': main.cpp:37:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("classictask.in", "r", stdin); ^ main.cpp:38:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("classictask.out", "w", stdout); ^