cd1.cpp: In function 'int main()': cd1.cpp:10: warning: unused variable 'l' cd1.cpp:10: warning: unused variable 'c' cd1.cpp:10: warning: unused variable 's' cd1.cpp:10: warning: unused variable 'd' cd1.cpp:10: warning: unused variable 'k' cd1.cpp:10: warning: unused variable 'j' cd1.cpp:11: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result cd1.cpp:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result