Question

Write a C++ program to check the upper and lower limits of different data types:

int,

unsigned int,

long long data type,

unsigned long long data type,

Bits in char data type,

char data type

signed char data type,

unsigned char data type.

Please write this in programming C++ language and please explain what we are doing in each step.

Answer 1

Hi. I have answered similar questions many times before. Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#include<iostream>

#include<limits>

using namespace std;

int main(){

              //each and every integer data type's minimum and maximum values are defined in the

              //limits.h header file. we just need to print out each of them. The points to be

              //noted are listed below:

              // -> the sizeof() operator/method returns the number of bytes needed for a data type

              // if you want the size in bits, just multiply this value by 8 (1 byte=8 bits)

              // -> minimum value of all unsigned types is 0

              // -> the limits can vary from compiler to compiler. some compilers use same range for

              // int and short, some others use same range for int and long.

              // -> if you want to display the ranges of float value, you will need to include float.h

              // header file. the FLT_MIN, FLT_MAX, DBL_MIN and DBL_MAX are defined in float.h

             

              //int type

              cout << "Size of int is: " << sizeof(int) << " bytes" << endl; ///number of bytes in int type

              cout << "lower limit is: " << INT_MIN << endl; //minimum value that can be represented by int

              cout << "upper limit is: " << INT_MAX << endl<<endl; //maximum value ...

             

             

              //unsigned int type

              cout << "Size of unsigned int is: " << sizeof(unsigned int) << " bytes" << endl;

              cout << "lower limit is: " << 0 << endl;

              cout << "upper limit is: " << UINT_MAX << endl<<endl;

             

              //long long int type

              cout << "Size of long long is: " << sizeof(long long) << " bytes" << endl;

              cout << "lower limit is: " << LONG_LONG_MIN << endl;

              cout << "upper limit is: " << LONG_LONG_MAX << endl<<endl;

             

              //unsigned long long int type

              cout << "Size of unsigned long long is: " << sizeof(unsigned long long) << " bytes" << endl;

              cout << "lower limit is: " << 0 << endl;

              cout << "upper limit is: " << ULONG_LONG_MAX << endl<<endl;

             

              //char type

              cout << "Size of char is: " << sizeof(char) << " byte" << endl;

              cout << "lower limit is: " << CHAR_MIN << endl;

              cout << "upper limit is: " << CHAR_MAX << endl<<endl;

             

             

              //unsigned char type

              cout << "Size of unsigned char is: " << sizeof(unsigned char) << " byte" << endl;

              cout << "lower limit is: " << 0<< endl;

              cout << "upper limit is: " << UCHAR_MAX << endl<<endl;

             

              return 0;

}

/*OUTPUT*/

Size of int is: 4 bytes

lower limit is: -2147483648

upper limit is: 2147483647

Size of unsigned int is: 4 bytes

lower limit is: 0

upper limit is: 4294967295

Size of long long is: 8 bytes

lower limit is: -9223372036854775808

upper limit is: 9223372036854775807

Size of unsigned long long is: 8 bytes

lower limit is: 0

upper limit is: 18446744073709551615

Size of char is: 1 byte

lower limit is: -128

upper limit is: 127

Size of unsigned char is: 1 byte

lower limit is: 0

upper limit is: 255