Compilare: main.cpp: In function 'int main()': main.cpp:131:9: warning: unused variable 'a_nou' [-Wunused-variable] int a_nou,b_nou,c_nou; ^~~~~ main.cpp:131:15: warning: unused variable 'b_nou' [-Wunused-variable] int a_nou,b_nou,c_nou; ^~~~~ main.cpp:131:21: warning: unused variable 'c_nou' [-Wunused-variable] int a_nou,b_nou,c_nou; ^~~~~ main.cpp:123:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("curcubeu.in", "r", stdin); ^ main.cpp:124:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("curcubeu.out", "w", stdout); ^ main.cpp:126:50: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &n, &a[1], &b[1], &c[1]); ^