Executable Statements :

Executable statements are those statements in a C program that cause actions to
occur when the program is executed. These statements form the operational part of
the program and determine how input data is processed to produce output results.
Without executable statements, a program would contain declarations only and
would not perform any meaningful computation.

Common types of executable statements include assignment statements, which
assign values to variables; input statements, which read data from an input
device such as the keyboard; output statements, which display data on the
screen; and function call statements, which invoke user-defined or library
functions. Executable statements are typically placed inside the main function
or within other user-defined functions.

EXAMPLE:

#include<stdio.h>

int main()
{
    printf("hello");
    return 0;
}

Output:

hello