In this code I'm generate random number in specific range, but I want the out put of array must be
m1,m1,m3,m1 ..
I mean adding the word "host" to every number that is generate randomly, how can do this please? this is code
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main (int argc, char *argv[])
{
int a[50];
srand(time(NULL));
a[i] = rand() % (3 + 1 - 1) + 1 ;
printf( " %d\n", a[i]);
}
In your code, ais an integer array, so it cannot hold a string value anyway.
In case, you just want to only print the value, use host in the format string in printf() itself, like
printf( "No. of random selected node = host%d\n", a[i]);
In case, you want the value to be generated and used, in some way, take a buffer and use snprint() to populate the content.
snprint(buf, 8, "host%d", a[i]);
the above will put values like host101, host103 etc. in the buf, as a string. Remember, buf has to be large enough to hold the supplied size (8, in this case.)
Note: Never use magic numbers like 8 in above code, that's just for illustration, use a MACRO definition, at least.
snprintf() is not "more" safe" than simply using sprint(buf, "host%d", a[i]);. snprintf() is trading one problem (buffer overrun) for another (mal-formed string).
snprintf().printf()? And who is upvoting this, and why?