View Compilation Error

246796_0_18915.cpp: In function `int main()':
246796_0_18915.cpp:5: error: non-lvalue in assignment
246796_0_18915.cpp:11: error: expected primary-expression before "int"
246796_0_18915.cpp:11: error: expected `;' before "int"
246796_0_18915.cpp:13: error: `sum' undeclared (first use this function)
246796_0_18915.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)