Compilare: user.cpp: In function ‘int main()’: user.cpp:21: warning: conversion lacks type at end of format user.cpp:21: warning: too many arguments for format user.cpp:25: warning: conversion lacks type at end of format user.cpp:25: warning: too many arguments for format user.cpp:38: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’ user.cpp:46: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long int’ user.cpp:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ‘p’ may be used uninitialized in this function