What are user-defined functions? Explain with example.

1.	What are user-defined functions? Explain with example.
Answer» User-defined Functions: This feature allows you to define functions within a program, which you can call whenever you need them. While running the program (FUNC) statement can save space as well as time, as a complex calculation can be defined with a short name and called up by its name where needed. Defining a Function main() { printf (“I am in function main \n”); India(); printf (“I am finally back in function main \n”); } India() { printf (“I am in India \n”); Delhi(); printf (“I am back in India \n”); 1 Delhi(); { printf (“I am in Delhi \n”); Bombay(); } Bombay() { printf (“I am in Bombay”); } Output: I am in function main I am in India I am in Delhi I am in Bombay I am back in India I am finally back in function main

Answer»

User-defined Functions: This feature allows you to define functions within a program, which you can call whenever you need them. While running the program (FUNC) statement can save space as well as time, as a complex calculation can be defined with a short name and called up by its name where needed.
Defining a Function

main()
{
printf (“I am in function main \n”);
India();
printf (“I am finally back in function main \n”);
}
India()
{
printf (“I am in India \n”);
Delhi();
printf (“I am back in India \n”);
1
Delhi();
{
printf (“I am in Delhi \n”);
Bombay();
}
Bombay()
{
printf (“I am in Bombay”);
}

Output:
I am in function main
I am in India
I am in Delhi
I am in Bombay
I am back in India
I am finally back in function main

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