If base is 10 and value is negative, the resulting string is preceded with a minus sign (-). With any other base, value is always considered unsigned.
str should be an array long enough to contain any possible value: (sizeof(int)*8+1) for radix=2, i.e. 17 bytes in 16-bits platforms and 33 in 32-bits platforms.
- Value to be converted to a string.
- Array in memory where to store the resulting null-terminated string.
- Numerical base used to represent the value as a string, between 2 and 36, where 10 means decimal base, 16 hexadecimal, 8 octal, and 2 binary.
Return ValueA pointer to the resulting null-terminated string, same as parameter str.
PortabilityThis function is not defined in ANSI-C and is not part of C++, but is supported by some compilers.
A standard-compliant alternative for some cases may be sprintf:
- sprintf(str,"%d",value) converts to decimal base.
- sprintf(str,"%x",value) converts to hexadecimal base.
- sprintf(str,"%o",value) converts to octal base.
Enter a number: 1750 decimal: 1750 hexadecimal: 6d6 binary: 11011010110
|sprintf||Write formatted data to string (function)|
|atoi||Convert string to integer (function)|
|atol||Convert string to long integer (function)|