Compilare: main.cpp: In function 'int main()': main.cpp:14:13: warning: variable 'x' set but not used [-Wunused-but-set-variable] int x, y; ^ main.cpp:14:16: warning: variable 'y' set but not used [-Wunused-but-set-variable] int x, y; ^ main.cpp:21:13: warning: variable 'x' set but not used [-Wunused-but-set-variable] int x, y; ^ main.cpp:21:16: warning: variable 'y' set but not used [-Wunused-but-set-variable] int x, y; ^ main.cpp:9:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("obiective.in", "r", stdin); ^ main.cpp:10:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("obiective.out", "w", stdout); ^ main.cpp:11:24: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(C, 20, stdin); k=-1; ^ main.cpp:15:28: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(C, 20, stdin); k=-1; ^ main.cpp:18:24: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(C, 20, stdin); k=-1; ^ main.cpp:22:28: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(C, 20, stdin); k=-1; ^