| This work belongs to the curriculum | C Programming Language II |
|---|---|
| Where the job requires | https://edu.cnblogs.com/campus/zswxy/SE2019-3/homework/9775 |
| My aim in this course is | Master the use of the for loop cycle design program |
| This job helped me achieve that goal in terms of specific | Understanding of the for loop as well as the gradual understanding of the use of loops |
| references | C language textbook |
1.PTA lab assignments
1.1 title of this title
Requires two positive integers m and n (m≤n) programming, and calculates the sequence m 2 + 1 / m + ( m + 1) 2 + 1 / (m + 1) + ⋯ + n2 + 1 / n .
Input format
input given two positive integers m and n (m≤n) in a row, separated by spaces therebetween.
Output format
output portion and the value S in accordance with the "sum = S" format in a row, accurate to six decimal places. Title ensure that the calculation result does not exceed the double precision.
1.1.1 Data Processing
Data are expressed: variables i, m, n, and floating point variable S, sum
the data processing: the use of the statement and pow sum = sum + pow (i, 2) + 1.0 / i modes of operation
1.1.2 Screenshot experiment Code
1.1.3 build test data
| Input data | Output Data | Explanation |
|---|---|---|
| 10 | sum=2.133256 | And the first ten |
| 20 | sum=2.479673 | A sum of the top twenty |
| 100 | sum=3.284342 | The sum of one hundred before |
1.1.4PTA submit a list and description
Description: accidentally floating-point and integer confused, and at the end of the semicolon is incorrect.
1.2 title of this title
This requires programming problem, the sequence of staggered 1-2 / 3 + 3 / 5-4 / 7 + 5 / 9-6 / 11 + ... and the first N.
Input format:
input line in a given positive integer N.
Output format:
output section and a value in a row, the results of three decimal places.
1.2.1 Data Processing
Data are expressed: variable flag, i, n and denominator, float variables sum and item
data processing: the use of the for loop statement, as well as new modes of operation variables and
1.2.2 Screenshot Code
1.2.3 build test data
| Input data | Output Data | Explanation |
|---|---|---|
| 5 | 0.917 | And the first five of the |
| 11 | 0.904 | Before eleven sum |
| 16 | 0.385 | Former sixteen sum |
1.2.4PTA submit a list and description
Note: This question I used two methods, the first method is to play no matter how wrong, then search the Internet, using another method, the beginning is always the symbols and letters with an error occurred while, and for statements the double not know why you want to appear.
2. Code peer assessment
2.1 Screenshot students Code
2.2 Screenshot their own codes
Description:
I'm the code more complicated, complex, his than mine concise, easier to understand;
his assignment with the letters, I use the word assignment, looks a bit complicated.
3. learning summary
3.1 learning progress bar
| Week / Date | This week the time spent | Lines of code | Learned Introduction | Currently puzzling question |
|---|---|---|---|---|
| 7/2019.10.11 | 14 | 280 | scanf, if else statements | For scanf statements still do not understand |
| 8/2019.10.17 | 16 | 320 | for the loop and the loop body | For the body of the loop is not really understand, for in the primary loop also understand the mode |
3.2 Cumulative lines of code words and blog
3.3 Summary and perception of learning content
3.3.1 learning content summary
Learning new knowledge, cyclic structure for, and understanding of the components of the cyclic structure and further improve on the for loop used in the basic operation of the program, though not too skilled, but can ask about it and in the future of learning their expertise.
3.3.2 learn insights
Become more familiar with the C language to develop an understanding of programming;
learned a lot of expertise, and will be more familiar with the programming operations and the learning of new knowledge and consolidate the knowledge learned;
not only to lectures, but also to learn on their own initiative , good preparation, gradually found wanting in practice and learning, to correct their own mistakes often committed.