View Compilation Error

22721_0_13269.cpp: In function `int main()':
22721_0_13269.cpp:9: error: `o' undeclared (first use this function)
22721_0_13269.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
22721_0_13269.cpp:13: error: expected `;' before '}' token
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