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union

mehak (94)
why does union a z2 = {0, 2}; give error ?

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#include<stdio.h>

int main()
{
    union a
    {
        int i;
        char ch[2];
    };
    union a z1 = {512};
    union a z2 = {0, 2};
    return 0;
}
mehak (94)
dot operator should be used to initialise z2,that is, a.ch[0]=0 and a.ch[1]=2
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