Compilare: main.cpp: In function 'int main()': main.cpp:123:6: warning: unused variable 'cost' [-Wunused-variable] int cost = 0; ^~~~ main.cpp: In function 'graphEdges citeste_edges(const char*)': main.cpp:66:81: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(ptr, "%d %d %d", &graphE.nr_noduri, &graphE.nr_edges, &graphE.nod_start); ^ main.cpp:70:80: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(ptr, "%d %d", &graphE.lista_edge[i].left, &graphE.lista_edge[i].right); ^ main.cpp: In function 'int main()': main.cpp:115:59: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(ptr, "%d %d", &graph1.nr_noduri, &graph1.nr_edges); ^