In HTML, we can represent programming code, variables, keyboard input, and system responses using special tags.
<pre>
<code>
<html>
<body>
<p>Hello World</p>
</body>
</html>
</code>
</pre>
<pre>
<code>
#include <stdio.h>
int main() {
printf("Hello World");
return 0;
}
</code>
</pre>
<pre>
<code>
console.log("Hello World");
</code>
</pre>
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Area of circle = π* r2 Speed = d/t