Compilare: main.cpp: In function 'void simplerdijkstra(int (*)[801], int, int)': main.cpp:77:16: warning: unused variable 'j' [-Wunused-variable] int i, elem, j ; ^ main.cpp: In function 'int main()': main.cpp:104:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d%d", &p, &n, &m ) ; ^ main.cpp:106:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d", &drake[i] ) ; ^ main.cpp:111:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d%d", &u, &v, &c) ; ^