Compilare: user.cpp: In function ‘void f()’: user.cpp:7:18: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[110]’ [-Wformat=] scanf("%s",&v); ^ user.cpp:6:16: warning: unused variable ‘i’ [-Wunused-variable] {int n,x,s,i; ^ user.cpp:7:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&v); ^ user.cpp: In function ‘int main()’: user.cpp:21:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] {freopen ("cifra.in","r",stdin); ^ user.cpp:22:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("cifra.out","w",stdout); ^ user.cpp:24:15: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^