Assignment #5 deletespaces

Programming Assignment #5∗

Programs are to be submitted to Gradescope by the due date. You may work alone or
in groups of two. Programs submitted up to 24 hours late will still be accepted but incur
a 10% grade penalty. Uploading your programs to gradescope will immediately score your
submission.
Your program grade will be the score of the last submission that you have
uploaded.
Programs must compile using gcc -Wall without any warnings. Each program that
compiles with a warning will incur a 10% grade penalty. Each program will have 5
seconds to compile and run test cases on gradescope.
In this assignment, you will download Program5Source.zip and complete the code
fragments as described below.
Problem 1: deletespaces.c (50 points, 5 per test case)
I this problem you will write a program that reads a string, deletes any whitespace from
the string, and prints the result back to the user. Read the string using fgets, a safe way
to read in strings. To read a string of length at most n into char* str, use the following:
fgets(str, n + 1, stdin);
Generally, fgets is used to read a string from a file, but using stdin as the third
argument causes fgets to read a string from stdin instead.
Example output:
[rsgysel@pc17 \~]\$ ./deletespaces
Enter a max string length: 99
Enter the string to delete whitespace from: The Quick Brown Fox Jumps Over The Lazy Dog
Result:
TheQuickBrownFoxJumpsOverTheLazyDog
[rsgysel@pc17 \~]\$ ./deletespaces
Enter a max string length: 20
Enter the string to delete whitespace from: a bcd ef g hi
Result:
abcdefghi
∗Last updated February 15, 2017
1
Problem 2: matrixaddition.c (50 points, 5 per test case)
In this problem you will implement integer matrix addition. This will require you to
dynamically allocate space for a 2 dimensional array. An example of matrix addition is:
A + B =
"
1 2 3
0 8 5 #
+
"
1 0 1
0 1 0 #
=
"
1 + 1 2 + 0 3 + 1
0 + 0 8 + 1 5 + 0 #
=
"
2 2 2
0 9 5 #
= C
In general, if A and B are matrices with the same number of rows and columns, then
their sum C = A + B is defined by C[i][j] = A[i][j] + B[i][j]. Here, A[i][j] is the integer
in the i
th row and j
th column of A. In the example above, A[1][1] = 1, A[1][3] = 3, and
A[2][2] = 8.
This program has been partially written for you in matrixaddition.c. Write the body
of functions that are marked with a comment that begins with
// Homework TODO: ...
Do not modify other parts of the code.
Example output:
[rsgysel@pc17 \~]\$ ./matrixaddition
Enter the number of rows and columns: 2 2
Enter matrix A:
Input row 0 elements, separated by spaces: 1 0
Input row 1 elements, separated by spaces: 0 1
Enter matrix B:
Input row 0 elements, separated by spaces: 2 2
Input row 1 elements, separated by spaces: 3 4
A + B =
3 2
3 5
[rsgysel@pc17 \~]\$ ./matrixaddition
Enter the number of rows and columns: 3 6
Enter matrix A:
Input row 0 elements, separated by spaces: 1 2 3 4 5 6
Input row 1 elements, separated by spaces: 0 0 0 0 0 0
Input row 2 elements, separated by spaces: 10 5 23 84 91 2
Enter matrix B:
Input row 0 elements, separated by spaces: 9 8 7 6 5 4
Input row 1 elements, separated by spaces: 2 1 2 1 2 1
Input row 2 elements, separated by spaces: 14 83 62 93 45 32
A + B =
10 10 10 10 10 10
2 1 2 1 2 1
24 88 85 177 136 34
2