0_0_10799664_4868.cpp: In function `int main()':
0_0_10799664_4868.cpp:13: error: `isPrime' undeclared (first use this function)
0_0_10799664_4868.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10799664_4868.cpp: In function `int isPrime(int)':
0_0_10799664_4868.cpp:21: error: `int isPrime(int)' used prior to declaration
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