Compilare: user.cpp: In function ‘void verif(int)’: user.cpp:18: warning: unused variable ‘val’ user.cpp: In function ‘void verif2(int)’: user.cpp:33: warning: unused variable ‘val’ user.cpp: In function ‘void verif3(int)’: user.cpp:48: warning: unused variable ‘val’ user.cpp: In function ‘void verif4(int)’: user.cpp:63: warning: unused variable ‘val’ user.cpp: In function ‘int main()’: user.cpp:86: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:103: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:128: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result