C Exercises: A simple structure of function
C Function : Exercise-1 with Solution
Write a program in C to show the simple structure of a function.
Pictorial Presentation:
Sample Solution:
C Code:
#include <stdio.h>
int sum (int, int);//function declaration
int main (void)
{
int total;
printf("\n\n Function : a simple structure of function :\n");
printf("------------------------------------------------\n");
total = sum (5, 6);//function call
printf ("The total is : %d\n", total);
return 0;
}
int sum (int a, int b) //function definition
{
int s;
s=a+b;
return s; //function returning a value
}
Sample Output:
Function : a simple structure of function : ------------------------------------------------ The total is : 11
Flowchart:
C Programming Code Editor:
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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