Compilare: main.cpp: In function 'void Read()': main.cpp:23:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^ main.cpp: In function 'bool Critery(Bla, Bla)': main.cpp:20:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'void Read()': main.cpp:24:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^ main.cpp:26:65: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&v[i].node1,&v[i].node2,&v[i].price); ^