sircifre.cpp: In function 'int main()': sircifre.cpp:23: warning: suggest parentheses around '&&' within '||' sircifre.cpp:10: warning: unused variable 'k' sircifre.cpp:10: warning: unused variable 't' sircifre.cpp:10: warning: unused variable 'u' sircifre.cpp:11: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result sircifre.cpp:14: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result