variable size

Variables of type char store values from -128 to 127

Variables of type unsigned char store values from 0 to 255

Variables of type short store values from -32768 to 32767

Variables of type unsigned short store values from 0 to 65535

Variables of type int store values from -2147483648 to 21474836
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Variables of type unsigned int store values from 0 to 4294967295

Variables of type long store values from -2147483648 to 2147483647

Variables of type unsigned long store values from 0 to 4294967295

Variables of type long long store values from -9223372036854775808 to 9223372036854775807

Variables of type unsigned long long store values from 0 to 18446744073709551615


The size of the smallest non-zero value of type float is 1.175e-38

The size of the largest value of type float is 3.403e+38

The size of the smallest non-zero value of type double is 2.225e-308

The size of the largest value of type double is 1.798e+308

The size of the smallest non-zero value of type long double is 3.362e-4932

The size of the largest value of type long double is 1.190e+4932


Variables of type float provide 6 decimal digits precision.

Variables of type double provide 15 decimal digits precision.