Compilare: user.cpp: In function ‘int main()’: user.cpp:20: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘long int*’ user.cpp:20: warning: format ‘%d’ expects type ‘int*’, but argument 3 has type ‘long int*’ user.cpp:20: warning: format ‘%d’ expects type ‘int*’, but argument 4 has type ‘long int*’ user.cpp:23: warning: comparison between signed and unsigned integer expressions user.cpp:25: warning: comparison between signed and unsigned integer expressions user.cpp:28: warning: comparison between signed and unsigned integer expressions user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:35: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long int’ user.cpp:18: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:19: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:21: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp:22: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp: In function ‘long int minim(long int, long int, long int)’: user.cpp:14: warning: control reaches end of non-void function /tmp/ccpgsjcE.o: In function `main': user.cpp:(.text+0xdc): warning: the `gets' function is dangerous and should not be used.