C++ byte 和 int 的相互转化

               

原文链接：http://blog.csdn.net/puttytree/article/details/7825709

typedef unsigned char bt;typedef unsigned int ui;void ui2bts(bt* out_pBts, ui in_uiLen) {    if (!out_pBts) {        printf("NULL == out_pBts\n");        return;    }    out_pBts[0] = (bt)(in_uiLen & 0xff);    out_pBts[1] = (bt)((in_uiLen >> 8) & 0xff);    out_pBts[2] = (bt)((in_uiLen >> 16) & 0xff);    out_pBts[3] = (bt)((in_uiLen >> 24) & 0xff);}ui bts2ui(bt* in_pBts) {    if (!in_pBts) {        printf("NULL == in_pBts\n");        return 0;    }    ui t_uiResult = (ui)in_pBts[0] & 0xff;    t_uiResult |= (((ui)in_pBts[1] << 8) & 0xff00);    t_uiResult |= (((ui)in_pBts[2] << 16) & 0xff0000);    t_uiResult |= (((ui)in_pBts[3] << 24) & 0xff000000);    return t_uiResult;}