Compilare: main.cpp: In function 'void dijkstra(int)': main.cpp:45:25: warning: unused variable 'i' [-Wunused-variable] int p = 1 , u = 1, i ; ^ main.cpp: In function 'void citire()': main.cpp:15:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d %d" , &n , &m ); ^ main.cpp:19:46: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d%d%d" , &x ,&y, &c) ; ^