chimie2.cpp: In function 'int main()': chimie2.cpp:445: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result chimie2.cpp:446: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result chimie2.cpp: In function 'void solve()': chimie2.cpp:468: warning: array subscript has type 'char' chimie2.cpp:470: warning: array subscript has type 'char' chimie2.cpp:464: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result chimie2.cpp: In function 'void ReadData()': chimie2.cpp:508: warning: array subscript has type 'char' chimie2.cpp:497: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result chimie2.cpp:504: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result