Compilare: main.cpp: In function 'int main()': main.cpp:56:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d\n", &n, &m, &k) ; ^ main.cpp:58:71: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d %d %d\n", &start.x, &start.y, &final.x, &final.y) ; ^ main.cpp:64:45: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d\n", &curr.x, &curr.y) ; ^