Eroare de compilare: user.c:2:18: error: cstring: No such file or directory user.c:3: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’ user.c: In function ‘rezolv’: user.c:15: warning: implicit declaration of function ‘strlen’ user.c:15: warning: incompatible implicit declaration of built-in function ‘strlen’ user.c:11: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c: In function ‘main’: user.c:36: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:37: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result