c - How can 256 be represented by a char? -


this question has answer here:

i ran following code in xcode in surprise answer 256. since char 8 bits long expected 0. dumping 1 in 8 place. can explain going on?

int main() {     unsigned char = 0x80;     printf("%d\n", i<<1);     return 0; }

it being promoted integer, can contain value of 256 fine. cast unsigned char give result expected:

printf("%d\n", (unsigned char)(i<<1) );

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