Practical 5: Simple functions

1. Write one program to accept two input values x and y and find the values of the following:

(a) [pic] (b) [pic][pic] (c) [pic] (d) [pic] (e) [pic]

(NOTE: log10(x) function is used to calculate log10x) #include #include int main()

{ int x,y ; double a,b,c,d,e;

printf("Enter 2 integer :\t"); scanf("%d%d",&x,&y);

//calculation a=sqrt(x*y);

b=(sqrt(x))*(sqrt(y));

c=pow(x,y);

d=pow(y,x);

e=log10(pow(x,y));

printf("%lf\n",a); printf("%lf\n",b); printf("%lf\n",c); printf("%lf\n",d); printf("%lf\n",e);

return 0; }

2. Write a program that prompts the user for the Cartesian coordinates to two points [pic]and [pic] and display the distance between them computed using the following formula:

distance = [pic]

#include
#include
int main()

{ int x1,x2,y1,y2 ; double dis ;

printf("Enter 4 integer :\t"); scanf("%d%d%d%d",&x1,&x2,&y1,&y2);

//calculation dis=sqrt(pow(x1-x2,2))+(pow(y1-y2,2));

printf("The distance is %.2lf\n",dis);

return 0;
}
3. Write a program to compute and display the absolute difference of two type double variables, x and y (that is | x - y |).

#include #include int main ()

{ double x,y,diff;

printf("Enter 2 numbers :"); scanf("%lf%lf",&x,&y);

//calculation diff=(x-y);

printf("The difference of 2 numbers is %.2lf\n",diff);

return 0; }

4. Write a name function that displays your name and another address function that displays your address. Write a pseudocode and a C program to call these functions to display your name and your address.

#include void name (); void address ();

int main() { name (); address ();

return 0; }

void name() { printf("chin\n");

return; }

void address() { printf("88 jalan manggis\n"); return;

}

5. Draw a flowchart and write a program for menu function that displays three choices of fast food. (You may use examples of KFC, McDonalds or Pizza) and allow user to key in his choice. Return this choice to main function and print his choice on the screen.

#include int menu();

int main() { int choice;

choice = menu(); printf("The choice is %d\n",choice); return 0; }

int menu() { int option;

printf("Menu selection\n"); printf("===================\n"); printf("1 , fried jeffrey\n"); printf("2 , Fred pie\n"); printf("3 , Hong juice\n"); printf("4 , kam fai pizza\n") printf("===================\n"); printf("Please enter ur choice >"); scanf("%d",&option);

return option;

}