What does the following code do?

#include
#include
#include
using namespace std;

//Function Prototype Declaration

bool seqsearch(vectorlist, string str);
void main()
{
//variable declaration
vectorlist;
string s, ser_str;
bool found;
int i, n;

//inputting the number of strings
cout << "Enter number of strings: ";
cin >> n;

//inputting strings into vector "list"

for (i=0; i {
cin >> s;
list. push_back(s);
}
cout << "Enter string to be searched: ";
cin >> ser_str;

//function call
found=seqsearch(list, ser_str);
if(found)
cout << "String found in Vector " << endl;
else
cout << "String not found in Vector." << endl;
system("pause");
} // end main
//Function Definition

bool seqsearch(vectorlist, string str)
{
bool found=false;
int i;
for (i=0; i {
if(list[i]==str)
{ found=true;
break;
}
}
return found;
}

Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;