Compilare: main.cpp: In function 'int main()': main.cpp:71:70: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d%d", &n, &nrcol, &nrlin, &l[1], &c[1], &k); ^ main.cpp:73:98: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d%d%d", &a[i], &b[i], &dir[i][0], &dir[i][1], &dir[i][2], &dir[i][3]); ^ main.cpp:92:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &l[i], &c[i]); ^