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Introduction to C++

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To perform arithmetic operations on variables and values C++ supports the following arithmetic operators:

Let’s try:


              
12345

            
int sum = 10 + 3; // 13
int dif = 10 - 3; // 7
int mul = 10 * 3; // 30
int div = 10 / 3; // 3
int mod = 10 % 3; // 1
copy

By division, any remainder was dropped since we assign the result to the int variable which doesn’t contain any decimals.

You can use all operations above to perform calculations on values, variables, or between variable and value:


              
123

            
double a = 32 + 13;    // 45 
double b = a + 25;     // 45 + 25 = 70
double c = a + b;      // 70 + 45 = 115
copy
Oppgave

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Robin has 18$ and Ted has 12$. How much money has each of them in average?

  1. Calculate the sum of their money and assign it to the variable sum.
  2. Divide the sum by 2 (number of people) to find the average and assign the result to the variable avr.
  3. Print the variable avr.

Please, don’t forget about semicolon ; at the end of lines.

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Seksjon 2. Kapittel 5
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bookSimple Math

Sveip for å vise menyen

To perform arithmetic operations on variables and values C++ supports the following arithmetic operators:

Let’s try:


              
12345

            
int sum = 10 + 3; // 13
int dif = 10 - 3; // 7
int mul = 10 * 3; // 30
int div = 10 / 3; // 3
int mod = 10 % 3; // 1
copy

By division, any remainder was dropped since we assign the result to the int variable which doesn’t contain any decimals.

You can use all operations above to perform calculations on values, variables, or between variable and value:


              
123

            
double a = 32 + 13;    // 45 
double b = a + 25;     // 45 + 25 = 70
double c = a + b;      // 70 + 45 = 115
copy
Oppgave

Swipe to start coding

Robin has 18$ and Ted has 12$. How much money has each of them in average?

  1. Calculate the sum of their money and assign it to the variable sum.
  2. Divide the sum by 2 (number of people) to find the average and assign the result to the variable avr.
  3. Print the variable avr.

Please, don’t forget about semicolon ; at the end of lines.

Løsning

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Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

close

Awesome!

Completion rate improved to 3.33
Seksjon 2. Kapittel 5
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