lanterna.cpp: In function `void readData()': lanterna.cpp:48: warning: int format, bool arg (arg 2) lanterna.cpp: In function `void bellmanFord()': lanterna.cpp:72: warning: unused variable `int cost' lanterna.cpp: In function `void writeData()': lanterna.cpp:107: warning: `int wmin' might be used uninitialized in this function