0_0_9521367_15812.cpp: In function `int main()':
0_0_9521367_15812.cpp:5: error: `o' undeclared (first use this function)
0_0_9521367_15812.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9521367_15812.cpp:5: error: expected `;' before ')' token
0_0_9521367_15812.cpp:5: error: label `a' used but not defined
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