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char Ò»¸ö×Ö½Ú 1 byte
int Á½¸ö×Ö½Ú 2 byte (16λϵͳ£¬ÈÏΪÕûÐÍÊÇ2¸ö×Ö½Ú)
long int Ëĸö×Ö½Ú 4 byte
float Ëĸö×Ö½Ú4 byet
double °Ë¸ö×Ö½Ú 8 byte
long double Ê®¸ö×Ö½Ú 10 byte
pointer Á½¸ö×Ö½Ú 2 byte(×¢Ò⣬16λϵͳ,µØÖ·×ÜÏßÖ»ÓÐ16λ)
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static jmp_buf buf;
main()
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b =3;
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