The following table gives the ranges for integral numbers as implemented in ARM C and C++. The third column of the table gives the numerical value of the range endpoint. The right hand column gives the bit pattern (in hexadecimal) that would be interpreted as this value by the ARM compilers.

When entering constants, you must be careful about the size and sign of the quantity. Constants are interpreted differently in decimal and hexadecimal/octal. See the appropriate C or C++ standard, or any of the recommended textbooks on the C and C++ programming language for more details.