allineing the output

[karthigeyantp]

Where i am developing a c++ program which has write a bulk of number in a file like this
+990.789
+678.980
+ 35.738 // Diff is here
+678.908
- 90.780 // diff is here
how can i achive this. the length will be keeps on changing

[newb16]

Use format specifier like %7.3f

[archonmagnus]

Since you are working with C++, I'd suggest looking into the inclusion of:

[code=cpp]
#include <iomanip>
[/code]

perhaps you'd be interested in using the functions from that library to handle your output alignment/formatting. Specifically the methods 'setw', 'setfill', 'setprecision', etc.

See the reference here.