Eroare de compilare: user.c: In function ‘esteValid’: user.c:11:2: warning: implicit declaration of function ‘_ultoa_s’ [-Wimplicit-function-declaration] _ultoa_s(nr, str,2000, 10); ^ user.c: In function ‘main’: user.c:31:3: warning: conversion lacks type at end of format [-Wformat=] scanf("%l%l", &n, &p); ^ user.c:31:3: warning: conversion lacks type at end of format [-Wformat=] user.c:31:3: warning: too many arguments for format [-Wformat-extra-args] user.c:37:5: warning: unknown conversion type character 0xa in format [-Wformat=] printf("%ll\n", rez); ^ user.c:37:5: warning: too many arguments for format [-Wformat-extra-args] /tmp/ccaZj9tP.o: In function `esteValid': user.c:(.text+0x35): undefined reference to `_ultoa_s' collect2: error: ld returned 1 exit status