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Convert a long integer into a string, using a given base
#include <stdlib.h>
char* ltoa( long value,
char* buffer,
int radix );
char* lltoa( long long value,
char* buffer,
int radix );
- value
- The value to convert into a string.
- buffer
- A buffer in which the function stores the string.
The size of the buffer must be at least 33 bytes when converting values
in base 2 (binary).
- radix
- The base to use when converting the number.
This value must be in the range:
2 ≤ radix ≤ 36
If the value of radix is 10, and value
is negative, then a minus sign is prepended to the result.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The ltoa() and lltoa() functions convert the given
long integer value
into the equivalent string in base radix notation, storing the
result in the character array pointed to by buffer.
A NUL character is appended to the result.
A pointer to the result.
#include <stdio.h>
#include <stdlib.h>
void print_value( long value )
{
int base;
char buffer[33];
for( base = 2; base <= 16; base = base + 2 ) {
printf( "%2d %s\n", base,
ltoa( value, buffer, base ) );
}
}
int main( void )
{
print_value( 12765 );
return EXIT_SUCCESS;
}
produces the output:
2 11000111011101
4 3013131
6 135033
8 30735
10 12765
12 7479
14 491b
16 31dd
ltoa() is
QNX 4;
lltoa() is
Unix
Safety: | |
Cancellation point |
No |
Interrupt handler |
Yes |
Signal handler |
Yes |
Thread |
Yes |
atoi(),
atol(),
itoa(),
sscanf(),
strtol(),
strtoul(),
ultoa(),
utoa()
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