Parsing Integer to String C

Question

How does one parse an integer to string(char* || char[]) in C? Is there an equivalent to the Integer.parseInt(String) method from Java in C?

Answer 1

This is discussed in Steve Summit's C FAQs.

Answer 2

You can try:

int intval;
String stringval;
//assign a value to intval here.
stringval = String(intval);

that should do the trick.

Answer 3

If you want to convert an integer to string, try the function snprintf().

If you want to convert a string to an integer, try the function sscanf() or atoi() or atol().

Answer 4

To convert an int to a string:

int x = -5;
char buffer[50];
sprintf( buffer, "%d", x );

You can also do it for doubles:

double d = 3.1415;
sprintf( buffer, "%f", d );

To convert a string to an int:

int x = atoi("-43");

See http://www.acm.uiuc.edu/webmonkeys/book/c_guide/ for the documentation of these functions.

Answer 5

The Java parseInt() function parses a string to return an integer. An equivalent C function is atoi(). However, this doesn't seem to match the first part of your question. Do you want to convert from an integer to a string, or from a string to an integer?

Answer 6

You may want to take a look at the compliant solution on this site.