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Altera_Forum
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15 years ago

C CODE Integer as ASCII to printf string...HELP!!!

Hi all, As like the title, now i have an unsigned integer that contain 4 ASCII code for a string: 0x41424344--------- my unsigned integer I would like to print the out "ABCD" where th...
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Altera_Forum
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15 years ago

printf("%.4s", &integer_a) will print at most 4 characters, but you really need to print the characters separately (unless you know that int is 32bits (or rather 4 times the size of char), that you have 4 characters, and that they are in the right bytes of the int.

The NiosII is 'little endian' (the lowest address of a word is it least significant byte) so that x=0x414243; printf("<%.4s>", &x) will generate "<CBA>". On a 'big endian' system (eg sparc or ppc) the same code will generate "<>". Setting x=0x41424344 would give "<DCBA>" and "<ABCD>" respectively.