Compilare: user.c:1:1: warning: return type defaults to ‘int’ [enabled by default] main(){fputs(atoll(10e14+1),fopen("peluzasud.out","w"));} ^ user.c: In function ‘main’: user.c:1:1: warning: implicit declaration of function ‘fputs’ [-Wimplicit-function-declaration] user.c:1:1: warning: implicit declaration of function ‘atoll’ [-Wimplicit-function-declaration] user.c:1:1: warning: implicit declaration of function ‘fopen’ [-Wimplicit-function-declaration]