Borderou de evaluare (job #11222)

Eroare de compilare: user.c: In function 'main': user.c:5:6: warning: implicit declaration of function 'freopen' [-Wimplicit-function-declaration] user.c:5:29: error: 'stdin' undeclared (first use in this function) user.c:5:29: note: each undeclared identifier is reported only once for each function it appears in user.c:6:30: error: 'stdout' undeclared (first use in this function) user.c:8:5: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration] user.c:8:5: warning: incompatible implicit declaration of built-in function 'scanf' [enabled by default] user.c:17:17: error: 'j' undeclared (first use in this function) user.c:18:17: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration] user.c:18:17: warning: incompatible implicit declaration of built-in function 'printf' [enabled by default]