Compilare: user.c: In function ‘main’: user.c:41: warning: implicit declaration of function ‘malloc’ user.c:41: warning: incompatible implicit declaration of built-in function ‘malloc’ user.c:42: warning: ‘return’ with no value, in function returning non-void user.c:37: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:40: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result