objective c - append unsigned char '\0' to NSString in iOS -

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this question has answer here:

while converting unsigned char nsstring ,\0 not appending in nsstring.

example :

char str[]="123400005678"; unsigned char strval[20]; memset(strval,0x00,sizeof(strval)); int ret=unsignedchar2hex1byte(str,strval);

after unsignedchar2hex1byte calculation strval output ,

strval[0] = '\x12' strval[1] = '4' strval[2] = '\0' strval[3] = '\0' strval[4] = 'v' strval[5] = 'x'

but assigning strval nsstring upto \x124 output , 2 length of nsssting . can 1 explain , how assign entire strval nsstring or nsmutablestring , length of strval should 6.


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