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pickupchik [31]
3 years ago
9

1. An integer in C (int) is represented by 4 bytes (1 byte = 8 bits). Find the largest integer that can be handled by C. Verify

that number by computer (try to printf that number, and printf that number +1). No programming is required for this. Hint: (a) Conversion from binary to decimal: 3 2 1 0 2 1101 =1 2 + 0 2 +1 2 +1 2 = 8 + 0 + 2 +1 10 =11 (b) If an integer is represented by 1 byte (8 bits), the maximum integer number is 1111111 (Seven 1's as one bit must be reserved for a sign). 6 5 0 2 1111111 =1 2 +1 2 ++1 2 1 2 1 7 =  − =128 −1 (c) The number looks like a telephone number in Dallas.
Computers and Technology
1 answer:
faust18 [17]3 years ago
4 0

Answer:

Check the explanation

Explanation:

In C, int requires 4 butes to sotre a integer number. that means it requires 4*8 = 32 bits. The maximum number can be stored using 32 bits is

(11111111111111111111111111111111)_2

The first digit is used for sign. decimal equivalent to this number can be computed as

(1111111111111111111111111111111)_2= 1\times2^{30}+1\times2^{29}+...+1\times2^0

=1\times2^{31}-1

= 2147483647-1=2147483646

That means int can store a up to 2147483646.

                      Testing with C code

#include<stdio.h>

int main()

{

  int a = 2147483647; // a with max number

  printf("%d\n",a);// printing max number

  a = a+1;// adding one to the number

  printf("%d\n",a);// printing the number after adding one

  return 0;

}

                THE OUTPUT

$ ./a.out

2147483647

-2147483648

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3 years ago
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The equation of certain traveling waves is y(x.t) = 0.0450 sin(25.12x - 37.68t-0.523) where x and y are in
NNADVOKAT [17]

Answer:

A. 0.0450

B. 4

C. 0.25

D. 37.68

E. 6Hz

F. -0.523

G. 1.5m/s

H. vy = ∂y/∂t = 0.045(-37.68) cos (25.12x - 37.68t - 0.523)

I. -1.67m/s.

Explanation:

Given the equation:

y(x,t) = 0.0450 sin(25.12x - 37.68t-0.523)

Standard wave equation:

y(x, t)=Asin(kx−ωt+ϕ)

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λ=2π/k

From the equation k = 25.12

Wavelength(λ ) = 2π/25.12 = 0.25

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c.) Wavelength(λ ) = 2π/25.12 = 0.25

d.) Angular frequency(ω)

ωt = 37.68t

ω = 37.68

E.) Frequency (f)

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f = ω/2π

f = 37.68/6.28

f = 6Hz

f.) Phase angle(ϕ) = -0.523

g.) Wave propagation speed :

ω/k=37.68/25.12=1.5m/s

h.) vy = ∂y/∂t = 0.045(-37.68) cos (25.12x - 37.68t - 0.523)

(i) vy(3.5m, 21s) = 0.045(-37.68) cos (25.12*3.5-37.68*21-0.523) = -1.67m/s.

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