Sure, here are some examples of `printf` calls using different types of variables -
```
// Interpolate an integer variable with default formatting
printf("The value of x is %d\n", x);

// Interpolate a floating-point variable with a specified number of decimal places
printf("Pi to two decimal places: %.2f\n", pi);

// Interpolate a string variable
printf("Hello, %s\n", name);

// Interpolate multiple variables and specifying their width
printf("The value of x is %3d and pi is %8.2f\n", x, pi);

// Interpolate a hexadecimal value
printf("x in hexadecimal is %X\n", x);
```
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