Compilare: user.c:1:1: warning: return type defaults to ‘int’ [enabled by default] main(){fprintf(fopen("peluzasud.out","w"),"%.0f",3e14);} ^ user.c: In function ‘main’: user.c:1:1: warning: implicit declaration of function ‘fprintf’ [-Wimplicit-function-declaration] user.c:1:8: warning: incompatible implicit declaration of built-in function ‘fprintf’ [enabled by default] main(){fprintf(fopen("peluzasud.out","w"),"%.0f",3e14);} ^ user.c:1:1: warning: implicit declaration of function ‘fopen’ [-Wimplicit-function-declaration] main(){fprintf(fopen("peluzasud.out","w"),"%.0f",3e14);} ^ user.c:1:1: warning: passing argument 1 of ‘fprintf’ makes pointer from integer without a cast [enabled by default] user.c:1:1: note: expected ‘void *’ but argument is of type ‘int’