ИНФОРМАТИКА!!!! ОЧЕНЬ Очень НАДО!!!!

Указывает конкретный символ разделителя

Объяснение: вроде как

1)program obnulenie; var a: array[1..100,1..100] of longint; n,i,j,m,k,o: longint; begin read(n,m); {}for i: =1 to n do for j: =1 to m do read(a[i,j]); for i: =1 to n do for j: =1 to m do if a[i,j]=0 then  for o: =1 to m do  a[i,o]: =0; for i: =1 to n do begin for j: =1 to m do write(a[i,j],' '); writeln; end; end. 2) program obnulenie; var a: array[1..100,1..100] of longint; n,i,j,m,k: longint; begin read(n,m); {} for i: =1 to n do for j: =1 to m do read(a[i,j]); for i: =1 to n do begin for j: =1 to m do if a[i,j]=0 then begin for k: =1 to m do a[i,k]: =0; end; end; for i: =1 to n do begin for j: =1 to m do write(a[i,j],' '); writeln; end; end.  3) program zamena; var a: array[1..100,1..100] of longint; n,i,j,m,k,vr1,x1,x2,y1,y2,max,min: longint; begin read(n,m); {} for i: =1 to n do for j: =1 to m do read(a[i,j]); max: =-999999; min: =999999; for i: =1 to n do begin for j: =1 to m do begin if max< a[i,j] then begin max: =a[i,j]; x1: =i; y1: =j end; if min> a[i,j] then begin min: =a[i,j]; x2: =i; y2: =j end; end; end; vr1: =a[x1-1,y1]; a[x1-1,y1]: =a[x1,y1]; a[x1,y1]: =vr1; vr1: =a[x2-1,y2]; a[x2-1,y2]: =a[x2,y2]; a[x2,y2]: =vr1; for i: =1 to n do begin for j: =1 to m do write(a[i,j]); writeln; end; end.