Question 50: Now there is a house in Beijing with a price of 2 million. If the house price increases by 10% every year, a software engineer can earn 0.4 million yuan a year. If he wants to buy this

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/* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)
* Copyright and version Declaration of the program
* All rights reserved.
* File name: txt. c
* Author: liuyongshui
* Question: Now there is a house in Beijing with a price of 2 million. If the house price increases by 10% every year, a software engineer can earn 0.4 million yuan a year.
If he wants to buy this house, no loans, no salary increases, no other income, no food, no consumption every year, then how many years does he need to save enough money to buy this house?
* Problem source:
* Completion date: January 1, April 16, 2013
* Version No.: V1.0
*/
 
 
# Include <stdio. h>
 
 
Int main ()
{
Int I = 0;
Int flag = 0; // flag
Float salary = 40; // annual salary
Float begin_value = 200; // The starting house price
Float rate = 0.1; // house price increase rate
Float late_value; // price after price increase

Late_value = begin_value * rate + begin_value;
While (salary * I <late_value)
{
I ++;
Late_value + = late_value * rate; // The annual price increases based on the previous year
 
 
If (I> 100) // I is greater than 100 (that is, your work in 100, hee, this is impossible)
{
Flag = 0;
Break;
}
}

If (flag) // flag = 0
{
Printf ("after % d, software engineers can buy a house! \ N ", I );
}
Else
{
Printf! \ N ");
}
 
 
 
 
Return 0;
}

/* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)
* Copyright and version Declaration of the program
* All rights reserved.
* File name: txt. c
* Author: liuyongshui
* Question: Now there is a house in Beijing with a price of 2 million. If the house price increases by 10% every year, a software engineer can earn 0.4 million yuan a year.
If he wants to buy this house, no loans, no salary increases, no other income, no food, no consumption every year, then how many years does he need to save enough money to buy this house?
* Problem source:
* Completion date: January 1, April 16, 2013
* Version No.: V1.0
*/

# Include <stdio. h>

Int main ()
{
Int I = 0;
Int flag = 0; // flag
Float salary = 40; // annual salary
Float begin_value = 200; // The starting house price
Float rate = 0.1; // house price increase rate
Float late_value; // price after price increase
 
Late_value = begin_value * rate + begin_value;
While (salary * I <late_value)
{
I ++;
Late_value + = late_value * rate; // The annual price increases based on the previous year

If (I> 100) // I is greater than 100 (that is, your work in 100, hee, this is impossible)
{
Flag = 0;
Break;
}
}

If (flag) // flag = 0
{
Printf ("after % d, software engineers can buy a house! \ N ", I );
}
Else
{
Printf! \ N ");
}

 

Return 0;
}