A Small Step Toward Calculators

  A Small Step Toward Calculators

Alice has a string of the form x+y or x-y. Here,  and  are single-digit nonnegative integers. Her task is to perform the addition or subtraction accordingly and print the result.

As a newbie programmer, Alice is struggling to finish the task. Can you help her?

Input Format

In a single line, you will be given the string.

Constraints

• The string contains exactly  characters of the form x+y or x-y.

Output Format

In a single line, print the result of the operation.

Sample Input 0

0+1

Sample Output 0

1

Sample Input 1

0-3

Sample Output 1

-3

Code:

#include <math.h>

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <assert.h>

#include <limits.h>

#include <stdbool.h>

int main() {

    int a,b;

    char c;

    scanf("%d%c%d",&a,&c,&b);

    switch(c)

    {

        case '-':printf("%d",a-b);

            break;

        case '+':printf("%d",a+b);

            break;

    }

    return 0;

}

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