Compilare: user.cpp: In function ‘unsigned int cmmdc(unsigned int, unsigned int)’: user.cpp:5:14: warning: unused variable ‘c’ [-Wunused-variable] unsigned c,r; ^ user.cpp:5:16: warning: unused variable ‘r’ [-Wunused-variable] unsigned c,r; ^ user.cpp: In function ‘int main()’: user.cpp:20:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%u",&n); ^ user.cpp:23:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%u%u",&a,&b); ^