#include <stdio.h> float fract = 2; double atof(), frand(); long time(); int eflag; char line[BUFSIZ]; main(argc,argv) char **argv; { int i,c; for(i=1;i<argc;i++) { if(*argv[i]!='-') fract=atof(argv[i]); else if((c=argv[i][1])=='e') eflag=1; } srand((int)time(0)); if(eflag==0) while(gets(line,sizeof(line))) { if(frand()*fract<1) puts(line); } else return(nrand((int)fract)); return(0); } gets(s,n) char *s; { int c; for(;;) { c = getchar(); if(c==EOF) return 0; if(c=='\n') break; *s++ = c; } *s = 0; return 1; }