speciale.cpp: In function 'int main()': speciale.cpp:73: warning: unused variable 'yu' speciale.cpp:42: warning: unused variable 't2' speciale.cpp:42: warning: unused variable 't3' speciale.cpp:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result speciale.cpp:73: warning: 'su' may be used uninitialized in this function