antic.cpp: In function 'bool cmp(sir, sir)': antic.cpp:24: warning: comparison between signed and unsigned integer expressions antic.cpp:26: warning: comparison between signed and unsigned integer expressions antic.cpp: In function 'int main()': antic.cpp:47: error: expected primary-expression before '[' token antic.cpp:47: error: expected primary-expression before ']' token antic.cpp:47: error: expected primary-expression before 'a' antic.cpp:47: error: expected primary-expression before 'b'