transport.cpp: In function 'void init()': transport.cpp:16: warning: unused variable 'i' transport.cpp:16: warning: unused variable 'j' transport.cpp:16: warning: unused variable 'k' transport.cpp:16: warning: unused variable 'z' transport.cpp: In function 'int main()': transport.cpp:61: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result transport.cpp:62: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result transport.cpp:66: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result