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#include <iostream>
#include <iomanip>
#include <string>
int main()
{
int i, j, k;
float x, y, z;
 
i = 10;
j = 12;
k = i * j;
x = 1.25;
y = 0.5;
z = x * y;
if (i % 2 == 0)
		cout << "genap";
	else
		cout << "ganjil";
float result = i * j*j;
cout << "hasilnya: " << result <<"   k = "<<k<<;
}

prog.cpp: In function ‘int main()’:
prog.cpp:16:3: error: ‘cout’ was not declared in this scope
   cout << "genap";
   ^~~~
prog.cpp:16:3: note: suggested alternative:
In file included from prog.cpp:1:
/usr/include/c++/8/iostream:61:18: note:   ‘std::cout’
   extern ostream cout;  /// Linked to standard output
                  ^~~~
prog.cpp:18:3: error: ‘cout’ was not declared in this scope
   cout << "ganjil";
   ^~~~
prog.cpp:18:3: note: suggested alternative:
In file included from prog.cpp:1:
/usr/include/c++/8/iostream:61:18: note:   ‘std::cout’
   extern ostream cout;  /// Linked to standard output
                  ^~~~
prog.cpp:20:1: error: ‘cout’ was not declared in this scope
 cout << "hasilnya: " << result <<"   k = "<<k<<;
 ^~~~
prog.cpp:20:1: note: suggested alternative:
In file included from prog.cpp:1:
/usr/include/c++/8/iostream:61:18: note:   ‘std::cout’
   extern ostream cout;  /// Linked to standard output
                  ^~~~
prog.cpp:20:48: error: expected primary-expression before ‘;’ token
 cout << "hasilnya: " << result <<"   k = "<<k<<;
                                                ^

Standard output is empty