View Compilation Error

590085_0_0_2598.cpp: In function `int main()':
590085_0_0_2598.cpp:16: error: `cin' undeclared (first use this function)
590085_0_0_2598.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
590085_0_0_2598.cpp:23: error: `j' undeclared (first use this function)
590085_0_0_2598.cpp:23: error: `f' undeclared (first use this function)
590085_0_0_2598.cpp:25: error: invalid operands of types `Trade[100]' and `double' to binary `operator+'
590085_0_0_2598.cpp:25: error: `sort' undeclared (first use this function)
590085_0_0_2598.cpp:30: error: name lookup of `i' changed for new ISO `for' scoping
590085_0_0_2598.cpp:18: error:   using obsolete binding at `i'