Module: Real numbers


Problem

4/6

Input and output of real numbers

Theory Click to read/hide

Enter

You can enter several real variables from the input stream and write them to variables in the standard way: 
var x, y: real;
read(x, y);
The first number goes into the \(x\) variable, the second goes into the \(y\)

Output

When displaying real numbers, scientific format is selected by default.
You can customize the output as needed according to the condition of the problem. After the number, a colon indicates the total number of positions that will be allocated to the number, and then another colon - the number of positions allocated to the fractional part. If after the first colon there is a number that is less than the sum of the number of characters in the integer part of the number, the space allotted for the dot separating the fractional and integer parts (1 character is allocated for this) and the number of characters allotted for the fractional part, then simply a number with given the allotted number of characters to the fractional part. Otherwise, additional spaces are written before the number. Therefore, if you do not know how many characters the integer part will take you, you can simply write 0 after the first colon, and then the whole number will be displayed without spaces before it.
Example: 
real x := 1.0/6;
writeln(x:12:9); // set to display 9 decimal places and a total of 12 decimal places per number, taking into account the separating point
The screen will display 
_0.166666672

Problem

Complete the tasks in order: 
1. On the 5th line, format the output of the variable \(y\)  in fixed-point format, with 10 decimal places
2. On the 6th line, format the output of the variable \(y\) in fixed point format so that the whole number is displayed in 10 positions, with 4 signs for the fractional part
Each output statement must output a number from a new line

time 1000 ms
memory 256 Mb
Rules for program design and list of errors in automatic problem checking

Teacher commentary

Insert the missing code snippets
Pascal
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#include <iostream>
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#include <iomanip>
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using namespace std;
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int main()
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{
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	float y = 1.0/2 + 1.0/3 + 1.0/4 + 1.0/5;
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	cout << y <<endl;
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}

     

Program check result

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