Qbytearray easy question

**arturs** · 19th May 2015, 20:59

I have additional qestion

Qt Code:

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QByteArray test;
        test[0]= 0xAB;
        test[1]= 0xCD;
        test[2]= 0xEF;
        test[3]= 0x01;
        test[4]= 0x02;
        test[5]= 0x03;
        test[6]= 0x04;

QByteArray test;
        test[0]= 0xAB;
        test[1]= 0xCD;
        test[2]= 0xEF;
        test[3]= 0x01;
        test[4]= 0x02;
        test[5]= 0x03;
        test[6]= 0x04;

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I need to take only the following bytes
test[1]= 0xCD;
test[2]= 0xEF;
test[4]= 0x02;
test[5]= 0x03;

and show it as a single number

0xCDEF0203 = 3454992899

I try to use the code but it does not work

Qt Code:

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usnigned long num;
num |= (unsigned char)(test[1]) << 8;
num |= (unsigned char)(test[2]) << 8;
num |= (unsigned char)(test[4]) << 8;
num |= (unsigned char)(test[5]) << 8  ;

usnigned long num;
num |= (unsigned char)(test[1]) << 8;
num |= (unsigned char)(test[2]) << 8;
num |= (unsigned char)(test[4]) << 8;
num |= (unsigned char)(test[5]) << 8  ;

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Why it does not work ? Maybe is it easier method to do it ?

Regards
Artur