C – Classification of Functions – Ameerpet Technologies

No arguments and No return values function:

#include<stdio.h>
void sayHi(void);
int main(void)
{
            sayHi();
            return 0 ;
}
void sayHi(void){
            printf(“Hi to all \n”);
}

With arguments and No return values function: (Even Number Program)

#include<stdio.h>
void isEven(int);
int main(void)
{
            int n;
            printf(“Enter number : “);
            scanf(“%d”, &n);
            isEven(n);
            return 0 ;
}
void isEven(int num){
            if(num%2==0)
                        printf(“%d is Even \n”, num);
            else
                        printf(“%d is not Even \n”, num);
}

With arguments and No return values (Print ASCII value of given character):

#include<stdio.h>
void ascii_value(char);
int main(void)
{
            char sym ;
            printf(“Enter symbol : “);
            scanf(“%c”, &sym);
            asciiValue(sym);
            return 0;
}
void asciiValue(char sym)
{
            printf(“ASCII value is : %d \n”, sym);
}

With arguments and With return values function: (addition of 2 numbers)

#include <stdio.h>
int add(int, int);
int main()
{
            int a, b, res;
            printf(“Enter two numbers : \n”);
            scanf(“%d%d”, &a, &b);
            res = add(a,b);
            printf(“%d + %d = %d\n”, a, b, res);
            return 0;
}
int add(int x, int y)
{
            int z=x+y ;
            return z;
}

No arguments and With return values function:

float getPI(void);
void main(void)
{
            float pi;
            fpi = getPI();
            printf(“PI value is : %f\n”, pi);
}
float getPI(void)
{
            return 3.142;
}

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