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#include <stdio.h>
double average(double a, double b) {
return (a + b) / 2;
}
int main(void) {
double x, y, z;
printf("Enter three numbers: ");
scanf("%lf %lf %lf", &x, &y, &z);
printf("Average of %g and %g: %g\n", x, y, average(x, y));
printf("Average of %g and %g: %g\n", y, z, average(y, z));
printf("Average of %g and %g: %g\n", x, z, average(x, z));
return 0;
}