Compilare: main.c: In function 'main': main.c:12:29: warning: passing argument 2 of 'freopen' makes pointer from integer without a cast [-Wint-conversion] 12 | freopen("nrtri.out",'w',stdout); | ^~~ | | | int In file included from main.c:2: /usr/include/stdio.h:266:46: note: expected 'const char * restrict' but argument is of type 'int' 266 | const char *__restrict __modes, | ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~