Compilare: user.cpp: In function ‘int bellmanFord()’: user.cpp:74:8: warning: unused variable ‘nodeDist’ [-Wunused-variable] int nodeDist = -heap.front().first; ^~~~~~~~ user.cpp: In function ‘void input()’: user.cpp:26:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file, "%d %d", &vertices, &edges); ^ user.cpp:31:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(file, "%d %d %d", &a, &b, &weight); ^