Compilare: user.cpp: In function ‘void nod(int)’: user.cpp:26: warning: comparison between signed and unsigned integer expressions user.cpp:33: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void dfs(int)’: user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp:56: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void neg(int, int)’: user.cpp:68: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void aleg(int, int)’: user.cpp:83: warning: comparison between signed and unsigned integer expressions user.cpp:96: warning: comparison between signed and unsigned integer expressions user.cpp:104: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:117: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result user.cpp:120: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result