Compilare: main.cpp: In function 'void Bellmanford()': main.cpp:61:27: warning: variable 'dist' set but not used [-Wunused-but-set-variable] int pi=0,ps=0,x,y,ind,dist; ^~~~ main.cpp: In function 'void read()': main.cpp:25:56: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d %d %d",&m,&n,&xi,&yi,&xf,&yf); ^ main.cpp:28:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j]); ^