How to write a secure C program..

[SDiZ Cheng]

I am going to rewrite suexec.c of apache ( to suit my boss's need ).
As this program is SUID, I don't want to make any mistake.

Besides not passing those arguments to printf( ), what C/C++ function(s)
I should take extra care while using?

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Cheng Yuk Pong (SDiZ) 
4096/1024 DH/DSS   0xA4C6FAD3
FE28 E6D4 AD21 5D4F F07B  EEA6 3C88 5DBB A4C6 FAD3



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