Simple union
union marks {
float perc;
char grade;
}
main () {
union marks student1;
student1.perc = 98.5;
printf( "Marks are %f address is %16lu\n", student1.perc, &student1.perc);
student1.grade = 'c';
printf("Grade is %c address is %16lu\n", student1.grade, &student1.grade);
}
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