/* Problem 3--Invisible Ink This was a straightforward conversion problem. */ #include #include int main (int argc, char **argv); int main (int argc, char **argv) { FILE *in, *out; int c, i; in = fopen ("prob3.in","r"); out = fopen ("prob3.out","w"); while ((c=fgetc (in))!=EOF) { switch (c) { /* Evaluate and convert */ case ' ': fprintf (out,"\n");break; case '\n': fprintf (out,"\n\n");break; default: for (i='A'; i<= c; i++) fprintf (out," "); fprintf (out,"\n"); } } fclose (in); fclose (out); return EXIT_SUCCESS; }