In computer programming, a statement block is a section of code which is grouped together, much like a paragraph; such blocks consist of one, or more, statements. In C, C++, and some other languages, statement blocks are enclosed by braces {}. Unlike paragraphs, statement blocks can be nested; that is, with one block inside another.
A typical statement block
int main()
{
return 0;
}
A nested statement block
int main()
{
int x=1;
if(x==1)
{
x++;
}
return 0;
}