Compilare: user.cpp: In function ‘void read()’: user.cpp:28:20: warning: unused variable ‘m’ [-Wunused-variable] int i = 0, m = strlen(S) - 1, x = 0; ^ user.cpp:28:39: warning: unused variable ‘x’ [-Wunused-variable] int i = 0, m = strlen(S) - 1, x = 0; ^ user.cpp: In function ‘int fact(int, int*)’: user.cpp:70:14: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = 0; ^ user.cpp: In function ‘int valF(int, int*)’: user.cpp:86:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp: In function ‘void read()’: user.cpp:13:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.in", "r", stdin); ^ user.cpp:14:26: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s, maxN, stdin); ^ user.cpp:18:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(S, maxN, stdin); ^ user.cpp:45:30: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(S, maxN, stdin); ^ user.cpp: In function ‘void write()’: user.cpp:145:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("apel.out", "w", stdout); ^