chimie.cpp: In function 'int main()': chimie.cpp:20: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[101]' chimie.cpp:34: warning: format '%s' expects type 'char*', but argument 2 has type 'char (*)[101]' chimie.cpp:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result chimie.cpp:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result chimie.cpp:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result chimie.cpp:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result chimie.cpp:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result chimie.cpp: In function 'void compus(int*, char*)': chimie.cpp:109: warning: NULL used in arithmetic