0_0_1973397_30238.cpp: In function `void ans1(double)':
0_0_1973397_30238.cpp:2: error: `printf' undeclared (first use this function)
0_0_1973397_30238.cpp:2: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1973397_30238.cpp: In function `void ans2()':
0_0_1973397_30238.cpp:3: error: `printf' undeclared (first use this function)
0_0_1973397_30238.cpp: In function `int main()':
0_0_1973397_30238.cpp:6: error: `cin' undeclared (first use this function)
0_0_1973397_30238.cpp:12: error: `fabs' undeclared (first use this function)
0_0_1973397_30238.cpp:25: error: `sqrt' undeclared (first use this function)
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