c programming

15 pts.
Tags:
C
what is the significance of main() function and the {} braces in c

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Hi,

When you call a C program from the operating system, it runs the main function.

Curly brackets enclose a group of statements that are treated as a unit for some purposes. For example, the statements that make up a function are all enclosed between { and }.
Another example: the statements in a loop:
<pre>
for (j = 0; j < 10; j++)
{
printf (“a to the %d power is %d\n”, j, x);
x *= a;
}
</pre>
Without the curly braces, the compiler would run the printf statement ten times, printing the same value of x each time, and only then would it move on to the “x *= a;” statement. { and } identify the two statements as a unit, so they are both done 10 times.

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