Compilare: main.cpp: In function 'int main()': main.cpp:63:5: warning: unused variable 'operatie' [-Wunused-variable] int operatie; ^~~~~~~~ main.cpp:64:8: warning: unused variable 'k' [-Wunused-variable] int x, k = 0; ^ main.cpp:60:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.in", "r", stdin); ^ main.cpp:61:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("algsort.out", "w", stdout); ^ main.cpp:66:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:69:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^