cpp/CPrimerPlus6E/Ch11/test_fit.c

/* test_fit.c -- try the string-shrinking function */
#include <stdio.h>
#include <string.h> /* contains string function prototypes */
void fit(char *, unsigned int);

int main(void)
{
    char mesg[] = "Things should be as simple as possible,"
    " but not simpler.";
    
    puts(mesg);
    fit(mesg,38);
    puts(mesg);
    puts("Let's look at some more of the string.");
    puts(mesg + 39);
    
    return 0;
}

void fit(char *string, unsigned int size)
{
    if (strlen(string) > size)
        string[size] = '\0';
}