View Compilation Error

0_0_4407123_15457.cpp: In function `int haoqiu(int, int)':
0_0_4407123_15457.cpp:21: error: name lookup of `i' changed for new ISO `for' scoping
0_0_4407123_15457.cpp:16: error:   using obsolete binding at `i'
0_0_4407123_15457.cpp: At global scope:
0_0_4407123_15457.cpp:25: error: `main' must return `int'