Hackerrank Basic Data Types Solution

Some C++ data types, their format specifiers, and their most common bit widths are as follows:

• Int ("%d"): 32 Bit integer
• Long ("%ld"): 64 bit integer
• Char ("%c"): Character type
• Float ("%f"): 32 bit real value
• Double ("%lf"): 64 bit real value

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Reading
To read a data type, use the following syntax:

scanf("`format_specifier`", &val)

For example, to read a character followed by a double:

char ch;
double d;
scanf("%c %lf", &ch, &d);

For the moment, we can ignore the spacing between format specifiers.

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Printing
To print a data type, use the following syntax:

printf("`format_specifier`", val)

For example, to print a character followed by a double:

char ch = 'd';
double d = 234.432;
printf("%c %lf", ch, d);

Note: You can also use cin and cout instead of scanf and printf; however, if you are taking a million numbers as input and printing a million lines, it is faster to use scanf and printf.

Input Format.

Input consists of the following space-separated values: int, long, char, float, and double, respectively.

Output Format

Print each element on a new line in the same order it was received as input. Note that the floating point value should be correct up to 3 decimal places and the double to 9 decimal places.

Sample Input.

3 12345678912345 a 334.23 14049.30493

Sample Output.

3
12345678912345
a
334.230
14049.304930000

Explanation.

Print int ,
followed by long ,
followed by char ,
followed by float ,
followed by double .

Solution in cpp

Approach 1.

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
    // Complete the code.
    int a;
    long l; char c;
    float  f; double d;
    cin>>a>>l>>c>>f>>d;
    cout<<a<<endl<<l<<endl<<c<<endl;
    cout.precision(3);
    cout<<fixed<<f<<endl;
    cout.precision(9);
    cout<<fixed<<d;
    return 0;
}

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Approach 2.

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
 int a;
    long b;
    char x;
    float y;
    double z;
    scanf("%d %ld %c %f %lf",&a,&b,&x,&y,&z);
    printf("%d\n%ld\n%c\n%f\n%lf",a,b,x,y,z);
    // Complete the code.
    return 0;
}

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Approach 3.

#include <iostream>
#include <cstdio>
using namespace std;

int main() {
    int i;
    long l;
    char c;
    float f;
    double d;
    scanf("%d %ld %c %f %lf", &i, &l, &c, &f, &d);

    printf("%d\n%ld\n%c\n%f\n%lf", i, l, c, f, d);
    return 0;
}

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