Compilare: user.cpp: In function 'int main()': user.cpp:16: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:16: warning: format '%ld' expects type 'long int*', but argument 3 has type 'int*' user.cpp:19: warning: comparison between signed and unsigned integer expressions user.cpp:53: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp:53: warning: format '%ld' expects type 'long int', but argument 3 has type 'int' user.cpp:53: warning: format '%ld' expects type 'long int', but argument 4 has type 'int' /tmp/ccbU5G9t.o: In function `main': user.cpp:(.text+0xdb): warning: the `gets' function is dangerous and should not be used.