Compilare: user.c: In function ‘main’: user.c:31: warning: integer constant is too large for ‘long’ type user.c:37: warning: integer constant is too large for ‘long’ type user.c:43: warning: integer constant is too large for ‘long’ type user.c:49: warning: integer constant is too large for ‘long’ type user.c:55: warning: integer constant is too large for ‘long’ type user.c:61: warning: integer constant is too large for ‘long’ type user.c:67: warning: integer constant is too large for ‘long’ type user.c:73: warning: integer constant is too large for ‘long’ type user.c:79: warning: integer constant is too large for ‘long’ type user.c:24: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result