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#include <string.h>

union Data
{
int i;

float f;

char str[20];
};

int main( )
{

union Data data;

data.i = 10;
printf( "data.i : %d\n", data.i);

data.f = 220.5;

printf( "data.f : %f\n", data.f);

strcpy( data.str, "C Programming");
printf( "data.str : %s\n", data.str);

return 0;

}

When the above code is compiled and executed, it produces the following result:

data.i : 10
data.f : 220.500000

data.str : C Programming

Here, all the members are getting printed very well because one member is being used at a
time.

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