0_0_9228588_4981.cpp: In function `int main()':
0_0_9228588_4981.cpp:5: error: expected init-declarator before "int"
0_0_9228588_4981.cpp:5: error: expected `,' or `;' before "int"
0_0_9228588_4981.cpp:7: error: `a' undeclared (first use this function)
0_0_9228588_4981.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9228588_4981.cpp:7: error: `b' undeclared (first use this function)
0_0_9228588_4981.cpp:8: error: `c' undeclared (first use this function)
0_0_9228588_4981.cpp:8: error: `sum' undeclared (first use this function)
0_0_9228588_4981.cpp: In function `int sum(int, int)':
0_0_9228588_4981.cpp:12: error: `int sum(int, int)' used prior to declaration
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