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Top Forums Programming Unable to assign zero to unsigned character array Post 302757167 by kbw on Thursday 17th of January 2013 06:48:12 AM
Old 01-17-2013
This sets the character zero (not ASCII zero).
Code:
#include <string.h>

struct ABCD
{
    unsigned char abc[6];
    unsigned char def;
    unsigned char ghi;
};

void abc(struct ABCD* s_tag)
{
//  memset(s_tag, '0', sizeof(*s_tag));    // this or the stuff below

    memcpy(s_tag->abc, "000000", sizeof(s_tag->abc));
    s_tag->def = '0';
    s_tag->ghi = '0';
}

int main()
{
    struct ABCD var;

    abc(&var);

    return 0;
}


Last edited by kbw; 01-17-2013 at 07:54 AM..
 

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XcmsColor(3X11) 						  XLIB FUNCTIONS						   XcmsColor(3X11)

NAME
XcmsColor, XcmsRGB, XcmsRGBi, XcmsCIEXYZ, XcmsCIEuvY, XcmsCIExyY, XcmsCIELab, XcmsCIELuv, XcmsTekHVC, XcmsPad - Xcms color struture STRUCTURES
The structure for XcmsColor contains: typedef unsigned long XcmsColorFormat; typedef struct { union { XcmsRGB RGB; XcmsRGBi RGBi; XcmsCIEXYZ CIEXYZ; XcmsCIEuvY CIEuvY; XcmsCIExyY CIExyY; XcmsCIELab CIELab; XcmsCIELuv CIELuv; XcmsTekHVC TekHVC; XcmsPad Pad; } spec; unsigned long pixel; XcmsColorFormat format; } XcmsColor; typedef double XcmsFloat; typedef struct { unsigned short red; unsigned short green; unsigned short blue; } XcmsRGB; typedef struct { XcmsFloat red; XcmsFloat green; XcmsFloat blue; } XcmsRGBi; typedef struct { XcmsFloat X; XcmsFloat Y; XcmsFloat Z; } XcmsCIEXYZ; typedef struct { XcmsFloat u_prime; XcmsFloat v_prime; XcmsFloat Y; } XcmsCIEuvY; typedef struct { XcmsFloat x; XcmsFloat y; XcmsFloat Y; } XcmsCIExyY; typedef struct { XcmsFloat L_star; XcmsFloat a_star; XcmsFloat b_star; } XcmsCIELab; typedef struct { XcmsFloat L_star; XcmsFloat u_star; XcmsFloat v_star; } XcmsCIELuv; typedef struct { XcmsFloat H; XcmsFloat V; XcmsFloat C; } XcmsTekHVC; typedef struct { XcmsFloat pad0; XcmsFloat pad1; XcmsFloat pad2; XcmsFloat pad3; } XcmsPad; DESCRIPTION
The XcmsColor structure contains a union of substructures, each supporting color specification encoding for a particular color space. SEE ALSO
XcmsAllocColor(3X11), XcmsStoreColor(3X11), XcmsConvertColors(3X11), Xlib - C Language X Interface X Version 11 Release 6.6 XcmsColor(3X11)
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