Compilare: user.c:2:1: warning: return type defaults to ‘int’ [enabled by default] main(){fprintf(fopen("tetris.out", "w"),u"㘵㤶㔰");} ^ user.c: In function ‘main’: user.c:2:1: warning: passing argument 2 of ‘fprintf’ from incompatible pointer type [enabled by default] In file included from /usr/include/stdio.h:934:0, from user.c:1: /usr/include/i386-linux-gnu/bits/stdio2.h:96:1: note: expected ‘const char * restrict’ but argument is of type ‘short unsigned int *’ fprintf (FILE *__restrict __stream, __const char *__restrict __fmt, ...) ^ user.c:2:1: warning: format is a wide character string [-Wformat=] main(){fprintf(fopen("tetris.out", "w"),u"㘵㤶㔰");} ^