📅  最后修改于: 2022-03-11 14:44:45.412000             🧑  作者: Mango
//%f // placeholder for a float value
//%.2f //as a placeholder, your float will be written rounded to 2 decimal places
// if you require a truncated representation, consider
// integer division or std::trunc() from or
// example string:
printf("Your total is $%.2f", 30.999);
//output:
//Your total is $31.00