Chapt 2

2.3

1) What's it gonna print?

answer1 is the interger 2

answer2 is the integer 5

2) …and this time?

The remainder of 9 divided by 4 is 1

The remainder of 17 divided by 3 is 2

3) Write a program to do this and that

/*Show off order of operations*/

#include <stdio.h>

void main(void)

{

printf("The value of 3.0 multiplied by 5.0 is %f, which is a float.",

3.0*5.0);

printf("\nThe value of 7.1 multiplied by 8.3 then subtract 2.2 is %f,

which is a float.", 7.1*8.3-2.2);

printf("\nThe value of 3.2 divided by the product of 6.1 and 5 is %f

which is a float.", 3.2/(6.1*5));

}

4) Some more of this and that

/*Show off order of operations*/

#include <stdio.h>

void main(void)

{

printf("The value of 15 divided by 4 is %d, which is an integer.",

15/4);

printf("\nThe remainder or modulus of 4 into 15 is %d", 15%4);

printf("\nThe value of the product of 6 and 4 subtracted from the product of 5 and 3 is %d.",(5*3)-(6*4));

}

5)Find the errors

a) ('%d," 15)

("%d",15);

b)("%f",33);

("%d"'33);

c)("%5d"' 526.768);

("%5f", 526.768);

d) ("a b c",26,15,18);

("a b c 26 15 18");

e) ("%3.6f", 47);

("%2.1f", 47);

f) ("53.6", 526.788);

('%3.3f", 526.788);

g) ("526.768, 33, "%f %d");

("%3.3f", 526.768);

('%d", 33);

2.4

3) Declaring variables

a)int count;

b)float grade;

c)double yield;

d)char initial;

7) What does this program mean, line by line?

A&B

int num1;

This variable is an integer (whole number)

int num2;

This variable is an integer (whole number)

int total;

This variable is an integer (whole number)

num1 = 25;

This variable now equals 25

num2 = 35:

This variable now equals 35

total = num1 + num2;

This variable adds the integers 1 and 2

Printf("The total of %d and %d is %d\n.",num1, num2, total);

This prints on screen "The total of 25 and 35 is 60.

9)

#include <stdio.h>

Void main(void)

{

int length, width, perimeter

length = 16

width = 18

perimeter = 2*length +2*width

printf("Twice the length, which is %d plus twice the width, %d is

the perimeter,%d.", length, width, perimeter);

}