no actually while executing i closed the while loop. if the file is like this..

@NCYC361-11a03.q1k bases 1 to 1576
GCGTGCCCGAAAAAATGCTTTTGGAGCCGCGCGTGAAAT...
+NCYC361-11a03.q1k bases 1 to 1576
!)))))****(((***%%((((*(((+,**(((+**+,-
[download]

and i need to convert it to..

>GCGTGCCCGAAAAAATGCTTTTGGAGCCGCGCGTGAAAT...
[download]

what should i do