Compilare: user.cpp: In function ‘void read()’: user.cpp:9:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ user.cpp:11:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", a+i); ^ user.cpp: In function ‘int main()’: user.cpp:30:31: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(iname, "r", stdin); ^ user.cpp:31:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(oname, "w", stdout); ^ user.cpp: In function ‘bool validateTransport(int)’: user.cpp:18:24: warning: ‘crtLoad’ may be used uninitialized in this function [-Wmaybe-uninitialized] crtLoad += a[i]; ^ user.cpp: In function ‘int main()’: user.cpp:18:24: warning: ‘crtLoad’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:16:9: note: ‘crtLoad’ was declared here int crtLoad, cnt = 0; ^