21953_0_1999.cpp: In function `int main()':
21953_0_1999.cpp:9: error: `n' undeclared (first use this function)
21953_0_1999.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
21953_0_1999.cpp:11: error: `printf' undeclared (first use this function)
each
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