C language-02 basic operations

1. Division Operations/

An integer In addition to an integer or an integer. Operands that participate in an operation must be of the same type.

The value of 1/2 is 0.   What is the type of operand that participates in the operation, and what type is the resulting value. 10.5 + 10 will elevate the right 10 to double type automatic type promotion.

int B = 10.5 + 1.7; Converting a large type to a small type automatically loses precision.

Double A = (double) 1/2; Note: The participation in the operation is the integral type, so be strong to turn a bit.

2. Residual operation% (modulo operation)

% can only be integers on both sides.

The positive and negative values depend on the value of% left.

#include <stdio.h>intMain () {intinput; intminute; intsecond; printf ("Please enter a time value (seconds): \ n"); scanf ("%d",&input); Minute= input/ -; Second= input% -; printf ("you entered:%d minutes%d seconds \ n", Minute,second); return 0;}

C language-02 basic operations