Eroare de compilare: user.cpp: In function ‘void suma(char*, char*)’: user.cpp:23: warning: array subscript has type ‘char’ user.cpp: In function ‘void produs(char*, int)’: user.cpp:40: warning: array subscript has type ‘char’ user.cpp: In function ‘void factorial(char*, int)’: user.cpp:50: error: ‘strcpy’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:93: warning: array subscript has type ‘char’ user.cpp:58: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:62: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result