v0.40: Create exercises. Challenge the community.

calc

Your mission

Write a program that reads two integers and an operator from the command line, then prints the computed result.

See it in action

./calc 7 + 5 | cat -e

Expected result

12$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly three arguments: an integer, an operator, and another integer.
The operator is a single character from the set: +, -, *, /, %.
Both integers are base-10 signed values that fit in an int. The result also fits in an int.
Print the result followed by a newline.
If the program does not receive exactly three arguments (argc must be 4), print wrong number of arguments followed by a newline.

More examples

./calc 100 / 4 | cat -e

Expected result

25$

./calc 17 % 5 | cat -e

Expected result

2$

./calc | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

calc.c

Allowed functions

atoiprintfwrite

calc

Command line

Your mission

Write a program that reads two integers and an operator from the command line, then prints the computed result.

See it in action

./calc 7 + 5 | cat -e

Expected result

12$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly three arguments: an integer, an operator, and another integer.
The operator is a single character from the set: +, -, *, /, %.
Both integers are base-10 signed values that fit in an int. The result also fits in an int.
Print the result followed by a newline.
If the program does not receive exactly three arguments (argc must be 4), print wrong number of arguments followed by a newline.

More examples

./calc 100 / 4 | cat -e

Expected result

25$

./calc 17 % 5 | cat -e

Expected result

2$

./calc | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

calc.c

Allowed functions

atoiprintfwrite

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01No argumentsWaiting

02AdditionWaiting

03DivisionWaiting

04ModuloWaiting

05Subtraction with negative resultWaiting

06vibe coding met gcc todayWaiting

07Rejects incomplete inputWaiting

calc

Your mission

Write a program that reads two integers and an operator from the command line, then prints the computed result.

See it in action

./calc 7 + 5 | cat -e

Expected result

12$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly three arguments: an integer, an operator, and another integer.
The operator is a single character from the set: +, -, *, /, %.
Both integers are base-10 signed values that fit in an int. The result also fits in an int.
Print the result followed by a newline.
If the program does not receive exactly three arguments (argc must be 4), print wrong number of arguments followed by a newline.

More examples

./calc 100 / 4 | cat -e

Expected result

25$

./calc 17 % 5 | cat -e

Expected result

2$

./calc | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

calc.c

Allowed functions

atoiprintfwrite

v0.40: Create exercises. Challenge the community.

Meet Studio →

calc

Command line

Your mission

Write a program that reads two integers and an operator from the command line, then prints the computed result.

See it in action

./calc 7 + 5 | cat -e

Expected result

12$

Your checklist

For your own tracking. Tests grade your code.

The program expects exactly three arguments: an integer, an operator, and another integer.
The operator is a single character from the set: +, -, *, /, %.
Both integers are base-10 signed values that fit in an int. The result also fits in an int.
Print the result followed by a newline.
If the program does not receive exactly three arguments (argc must be 4), print wrong number of arguments followed by a newline.

More examples

./calc 100 / 4 | cat -e

Expected result

25$

./calc 17 % 5 | cat -e

Expected result

2$

./calc | cat -e

Expected result

wrong number of arguments$

Constraints

Expected files

calc.c

Allowed functions

atoiprintfwrite

Tests

Run the tests to grade your code

Build your code, then check each test here. Open a result to inspect its output.

Build

01No argumentsWaiting

02AdditionWaiting

03DivisionWaiting

04ModuloWaiting

05Subtraction with negative resultWaiting

06vibe coding met gcc todayWaiting

07Rejects incomplete inputWaiting