Compilare: user.cpp: In function ‘int main()’: user.cpp:9: warning: conversion lacks type at end of format user.cpp:9: warning: too many arguments for format user.cpp:14: warning: conversion lacks type at end of format user.cpp:14: warning: conversion lacks type at end of format user.cpp:14: warning: too many arguments for format user.cpp:22: warning: unknown conversion type character 0xa in format user.cpp:22: warning: too many arguments for format user.cpp:9: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result