0_0_1643090_13175.cpp: In function `int main()':
0_0_1643090_13175.cpp:14: error: `exit' undeclared (first use this function)
0_0_1643090_13175.cpp:14: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1643090_13175.cpp:16: error: `malloc' undeclared (first use this function)
0_0_1643090_13175.cpp:26: error: `abs' undeclared (first use this function)
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