Compilare: user.cpp: In function ‘int main()’: user.cpp:15:22: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘char*’ [-Wformat=] scanf("%d",&n); ^ user.cpp:16:22: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[500000]’ [-Wformat=] scanf("%s",&s); ^ user.cpp:24:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] flc1+=(s[n]-'0'+s[n+1]-'0'); ^ user.cpp:25:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[flc]=(flc1%10)+'0'; ^ user.cpp:32:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] printf("%d",s[flc]-'0'); ^ user.cpp:10:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("staropramen.in","r",stdin); ^ user.cpp:11:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("staropramen.out","w",stdout); ^ user.cpp:12:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:15:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:16:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",&s); ^