Compilare: main.cpp: In function 'int main()': main.cpp:56:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d", &n, &m, &k) ; ^ main.cpp:58:69: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d %d", &start.x, &start.y, &final.x, &final.y) ; ^ main.cpp:64:43: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &curr.x, &curr.y) ; ^