1. Convert the following Java program to C:
import java.util.Scanner;
public class ArrayEx {
public static void main(String [] args) {
int [] a,b;
int j, m, suma = 0, sumb = 0, sumdiff = 0;
Scanner keyboard = new Scanner(System.in);
a=new int[100];
b=new int[100];
System.out.print("enter the number of pairs to read: ");
m = keyboard.nextInt();
System.out.println("enter " + m + " pairs:");
for (j = 0 ; j < m ; j++) {
a[j]=keyboard.nextInt();
b[j]=keyboard.nextInt();
suma = suma + a[j];
sumb += b[j];
sumdiff = sumdiff + (a[j] - b[j]);
}
for (j = m - 1; j >= 0; j--)
System.out.println(a[j] + " " + b[j] + " " + (a[j]-b[j]));
System.out.println(suma + " " + sumb + " " + sumdiff);
}
}
2. Write a function match which has 3 parms: two integer arrays
(named one and two) and the size of the arrays (an int). The
function returns the number of times "matches" occur in parallel
positions in the two arrays. That is, count the number of times
one[i] == two[i]. The lengths of both arrays are the same.
3. Write a function readArray which has two parms: an array of ints and
the size of the array. Prompt the user and read values into the array
from the keyboard.
4. Write the include statements, prototypes and main function to declare
two int arrays of size 25, call your readArray function to read values
into each of your arrays, call your match function, and print out the
number of matches in the two arrays.
5. Write a function reverse which has 3 parms: two integer arrays
(named one and two) and the size of the arrays (an int). The
function copies the values from two into one in such that one
contains the reverse of two. That is, one[0] = two[size-1],
one[1] = two[size-2], etc. The lengths of both arrays are the same.
6. Write the include statements, prototypes and main function to declare
and initialize an int array of 12 elements and declare a second int
array of size 12. Call your reverse function to reverse the first array
into the second, and print out the second array.
7. Write a function called lenstr with one parm, a string. The function
will return the length of the string. Do not use strlen.
8. Write the statements to declare a string that can hold at most 25
characters. Prompt the user to enter a string, read the string, and
call the lenstr function and print the length of the string.
9. Write a function called count that will count and return the occurrences
of a given character in a string named letters. The parameters will
be the string letters and the character to count. For example, if the
string contains the values
x8RAaa0sSaA
and the character to count is 'a', then the function returns 3.
10. Write the statements to declare a string that can hold at most 25
characters. Prompt the user to enter a string, read the string, and
call the count function and print the number of times the character
p is contained in the string.
11. Write a function called catstr with two parms, both strings. The
function will add the characters in the second string to the end
of the first string. Assume that the first string is large enough
to hold the characters of the second string. Do not use strcat.
12. Write the statements to declare and initialize two strings. Make sure
that the first string is large enough to hold the contents of both
strings. Call your catstr function to add the second string to the
first, then print both strings.
13. Write a function called ncatstr with three parms, two strings and
and int. The function will add the characters in the second string
to the end of the first string. It will add at most n chars: if
the second string is less than n chars, it will add all chars followed
by a null byte. If the second string is n chars or more, it will add
n-1 chars and a null byte. Note that this is not the same as the way
strncat works. Do not use strncat.
14. Write the statements to declare and initialize four strings as
follows:
string 1: 20 chars, contains "cloudy"
string 2: 15 chars, contains "blueblue"
string 3: 25 chars, contains "sunny"
string 4: 15 chars, contains "bright bright"
Call your ncatstr function to add at most 10 characters of string 2
to string 1. Call it again to add at most 10 characters of string 4
to string 3. Print string 1 and string 3. What will be printed?
Email Me |
Office Hours |
My Home Page |
Department Home |
MCC Home Page
© Copyright Emmi Schatz 2016