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/* public domain by Jerry Coffin. Tested with MSC 7.0 */
/* written primarily for clarity, not speed... */
/* requires w_wrap.c and w_wrap.h from snippets. */
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include "w_wrap.h"
void center(FILE *file, char *string, size_t width)
{
char *line,*end_line;
size_t spaces;
int last = 0;
size_t len;
word_wrap(string,width);
line = string;
while (!last)
{
end_line = strchr(line,'\n');
if (NULL==end_line)
{
last = 1;
end_line = strchr(line,'\0');
}
len = end_line - line;
spaces = (width - len) / 2 ;
fprintf(file,"\n%*c%*.*s",spaces,' ',len,len,line);
line = end_line + 1;
}
}
#ifdef TEST
int main(void)
{
char *string = "This is a long string to see if it will be"
" printed out correctly but I'm not sure whether it will work"
" correctly or not. I guess we'll see when we try it out.";
printf("\nHere's the string centered in 50 columns.\n");
center(stdout,string,50);
printf("\n\nAnd here it's centered in 72 columns.\n");
center(stdout,string,72);
}
#endif
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