Compilare: user.cpp: In function 'void sort(int)': user.cpp:17: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int caut1(int, int)': user.cpp:50: warning: comparison between signed and unsigned integer expressions user.cpp:52: warning: comparison between signed and unsigned integer expressions user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int caut2(int, int)': user.cpp:72: warning: comparison between signed and unsigned integer expressions user.cpp:74: warning: comparison between signed and unsigned integer expressions user.cpp:76: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:110: warning: comparison between signed and unsigned integer expressions user.cpp:116: warning: comparison between signed and unsigned integer expressions user.cpp:128: warning: comparison between signed and unsigned integer expressions