Надобно написать программу на c++

include lt;iostreamgt;

using namespace std;

int main()

cout lt;lt; 7 * 8 / 2;      // S = a * h / 2;

return 0;

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include lt;iostreamgt;

using namespace std;

int main()

int d;

cout lt;lt; "d = ";

cin gt;gt; d;

cout lt;lt; d * 12 / 2;    // S = d1 * d2 / 2;

return 0;

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include lt;iostreamgt;

using namespace std;

int main()

int ml, botb;

cout lt;lt; "Enter middle line = ";

cin gt;gt; ml;

cout lt;lt; "Enter the bottom base = ";

cin gt;gt; botb;

cout lt;lt; "The top base = " lt;lt; 2 * ml - botb;

return 0;