3 type of FUNCTION (c prgramming)

Below are 3 types of function that usually been use for create a program in programming lesson and i also provide the example of each function...ENjoy YA...

1. Functions with no arguments and no return values

/* Program to illustrate a function with no argument and no return values*/

#include

void statement1();

void starline();

void statement2();

int main()

{

statement1();

starline();

statement2();

starline();

return 0;

}

/*function to print a message*/

void statement1()

{

printf("\n Sample subprogram output\n");

}

void statement2()

{

printf("\n Sample subprogram output two\n");

}

void starline()

{

int a;

for (a=1;a<60;a++)

printf("%c",'*');

printf("\n");

}

2. Functions with arguments but no return values

/*Program to find the largest of two numbers using function*/

#include

void largest(int, int);

int main()

{

int a,b;

printf("Enter the two numbers");

scanf("%d%d",&a,&b);

largest(a,b);

return 0;

}

/*Function to find the largest of two numbers*/

void largest(int a, int b)

{

if(a>b)

printf("Largest element=%d",a);

else

printf("Largest element=%d",b);

}

3. Functions with arguments and return values

#include

float add(float,float);

double sub(double,double);

int main()

{

float x=12.0;

float y=9.0;

printf("%f\n",add(x,y));

printf("%lf\n",sub(x,y));

return 0;

}

float add(float a,float b)

{

return (a+b);

}

double sub(double p,double q)

{

return(p-q);

}