This chapter is from the book
This chapter is from the book
This chapter is from the book
Exercises
- Type in and run the five programs presented in this chapter. Compare the output produced by each program with the output presented after each program in the text.
Which of the following are invalid variable names? Why?
Int char 6_05 Calloc Xx alpha_beta_routine floating _1312 z ReInitialize _ A$
Which of the following are invalid constants? Why?
123.456 0x10.5 0X0G1 0001 0xFFFF 123L 0Xab05 0L -597.25 123.5e2 .0001 +12 98.6F 98.7U 17777s 0996 -12E-12 07777 1234uL 1.2Fe-7 15,000 1.234L 197u 100U 0XABCDEFL 0xabcu +123
Write a program that converts 27° from degrees Fahrenheit (F) to degrees Celsius (C) using the following formula:
C = (F - 32) / 1.8
What output would you expect from the following program?
#include <stdio.h> int main (void) { char c, d; c = 'd'; d = c; printf ("d = %c\n", d); return 0; }Write a program to evaluate the polynomial shown here:
3x
3- 5x2+ 6for x = 2.55.
Write a program that evaluates the following expression and displays the results (remember to use exponential format to display the result):
(3.31 x 10
-8x 2.01 x 10-7) / (7.16 x 10-6+ 2.01 x 10-8)To round off an integer i to the next largest even multiple of another integer j, the following formula can be used:
Next_multiple = i + j - i % j
For example, to round off 256 days to the next largest number of days evenly divisible by a week, values of i = 256 and j = 7 can be substituted into the preceding formula as follows:
Next_multiple = 256 + 7 - 256 % 7 = 256 + 7 - 4 = 259Write a program to find the next largest even multiple for the following values of i and j:
i
j
365
7
12,258
23
996
4