Compilare: user.cpp: In function ‘void suma(char*, char*)’: user.cpp:24: warning: array subscript has type ‘char’ user.cpp: In function ‘void produs(char*, int)’: user.cpp:41: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:94: warning: array subscript has type ‘char’ user.cpp:59: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:61: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:63: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result