1. Function with No Arguments and No Return Value
The function does not take any input and does not return any
output.
#include
<stdio.h>
void greet() {
printf("Hello, Welcome!\n");
}
int main() {
greet();
return 0;
}
2. Function
with Arguments but No Return Value
Takes input
(parameters) but does not return anything.
#include
<stdio.h>
void add(int a,
int b) {
printf("Sum = %d\n", a + b);
}
int main() {
add(5, 3);
return 0;
}
3. Function
with No Arguments but Returns a Value
Takes no input
but returns some output.
#include
<stdio.h>
int
giveNumber() {
return 10;
}
int main() {
int x = giveNumber();
printf("Value = %d\n", x);
return 0;
}
4. Function
with Arguments and Return Value
Takes input and
returns output.
#include
<stdio.h>
int
multiply(int a, int b) {
return a * b;
}
int main() {
int result = multiply(4, 6);
printf("Product = %d\n", result);
return 0;
}
#include
<stdio.h>
/* 1. No
arguments, no return value */
void func1() {
printf("This is Function 1: No
arguments, No return value.\n");
}
/* 2. Arguments
but no return value */
void func2(int
a, int b) {
printf("This is Function 2: Arguments
but No return value.\n");
printf("Sum = %d\n", a + b);
}
/* 3. No
arguments but returns a value */
int func3() {
printf("This is Function 3: No
arguments but Returns a value.\n");
return 50;
}
/* 4. Arguments
and returns a value */
int func4(int
x, int y) {
printf("This is Function 4: Arguments
and Returns a value.\n");
return x * y;
}
int main() {
func1();
// Call function 1
func2(5, 10); // Call function 2
int value = func3(); // Call function 3
printf("Value returned from func3 =
%d\n", value);
int product = func4(6, 4); // Call function 4
printf("Product returned from func4 =
%d\n", product);
return 0;
}
