Thread: Convert array to string

I have the following code and need to convert the array into character string and print the value later as opposed to printing it via loop:

int main( void )
{
int i;
unsigned char buf[16]; // assume buf is populated by a function.
char p[33];

for( i = 0; i < 16; i++ )
printf( "%02x", digest[i] );

return( 0 );
}

how can I place the characters from buf into p?
Thanks in advance.

There is a version of printf that prints to a string....

This is how I did it using macro:

#define arrayToString(name, digest) { char p[3]; int i; \
for( i = 0; i < 16; i++ ){ \
sprintf(p, "%02x", digest[i]); \
strcat(name, p); \
}}

but I was looking for a faster/optimized solution.
Thanks for everybody's feedback.

If you want "optimized", note that you know where each print is supposed to go (since you have a fixed width print), hence there's no need to use strcat to find the end of the old string -- you know where it is, so you can print directly where it's supposed to go.