Compilare: user.c:31: warning: return type of ‘main’ is not ‘int’ user.c: In function ‘main’: user.c:36: warning: format ‘%i’ expects type ‘int *’, but argument 2 has type ‘long long int *’ user.c:37: warning: format ‘%i’ expects type ‘int *’, but argument 2 has type ‘long long int *’ user.c:37: warning: format ‘%i’ expects type ‘int *’, but argument 3 has type ‘long long int *’ user.c:40: warning: format ‘%i’ expects type ‘int’, but argument 2 has type ‘long long int’ user.c:34: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:35: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result user.c:36: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result user.c:37: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result