0_0_6418874_25378.cpp: In function `int cmp(const void*, const void*)':
0_0_6418874_25378.cpp:86: error: `point' undeclared (first use this function)
0_0_6418874_25378.cpp:86: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6418874_25378.cpp:86: error: `cc' undeclared (first use this function)
0_0_6418874_25378.cpp:86: error: expected primary-expression before ')' token
0_0_6418874_25378.cpp:86: error: expected `;' before "aa"
0_0_6418874_25378.cpp:87: error: `dd' undeclared (first use this function)
0_0_6418874_25378.cpp:87: error: expected primary-expression before ')' token
0_0_6418874_25378.cpp:87: error: expected `;' before "bb"
0_0_6418874_25378.cpp:89: error: `EP' undeclared (first use this function)
0_0_6418874_25378.cpp: In function `int graham(Point*, int)':
0_0_6418874_25378.cpp:107: error: `point' undeclared (first use this function)
0_0_6418874_25378.cpp:111: error: `EP' undeclared (first use this function)
0_0_6418874_25378.cpp: In function `double poly_area(Point*, int)':
0_0_6418874_25378.cpp:125: error: `zero' undeclared (first use this function)
0_0_6418874_25378.cpp: In function `int isinsideconvex(int, Point*, Point)':
0_0_6418874_25378.cpp:150: error: `EP' undeclared (first use this function)
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