// Delete first n quater notes from midi file.
#include <stdio.h>
#include <stdlib.h>
#include "h.h"
BP bp; note * mus = 0;

int main(int argc, char * * argv){
if(argc < 3) {printf("include filename and quater note"
    " count to clip.\n"); exit(0);}
{note* music = Read(argv[1], &bp);
double cv = strtod(argv[2], 0)*bp.den;
void fed(note n){int nt = (n.start + cv);
if(nt >= 0) {n.start = nt; aug(n, &mus);}
else if (n.dur > maxdur) aug(n, &mus);}
scan(fed, music, 1);
Write("slide.mid", mus, &bp); return 0;}}