itoa function

Prototype char* itoa (sint value, char* str, int base);

 

Convert integer to string (non-standard function)

Converts an integer value to a null-terminated string using the specified base and stores the result in the array given by str parameter.

 

If base is 10 and value is negative, the resulting string is perceded 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. 17Bytes in 16-bits platforms and 33Bytes for 32-bits platforms.

 

Parameters:

1.value:

value to be converted to a string.

2.str:

Array in memory where to store  the resulting null-terminated string.

3.base:

Numercial 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 value

A pointer to the resulting null-terminated string, same as paramaters.

 

Portability

This 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.