foo.cc: In function 'int main()':
foo.cc:11:20: error: a function-definition is not allowed here before '{' token
 int isPrime(int n) {int i;if (n < 2)return 0;if (n == 2)
                    ^
foo.cc:17:9: error: expected '}' at end of input
 return 1;
         ^
foo.cc:17:9: error: expected '}' at end of input

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