使用C语言的除法和取模运算符将数字按照相反的顺序打印出来

Problem

How to print the given two-digit number in reverse order with the help of division and Modulo operator using C programming language?

Solution

So far, we had seen how to reverse the string using string function and without string function. Now let’s see how to reverse the two-digit number without using the predefined function.

The logic we use to reverse the number with the help of operators is −

int firstno=number%10; //stores remainder
int secondno=number/10;// stores quotient

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然后打印第一个数字，后面跟着第二个数字，然后你就会得到给定数字的逆序数字。

程序 1

在这个例子中，我们将取一个两位数，并应用除法和取模运算符来逆转数字−

#include
int main(){
int number;
printf("enter a number:");
scanf("%4d",&number);
int firstno=number%10; //stores remainder
int secondno=number/10;// stores quotient
printf("After reversing =%d%d

",firstno,secondno);
return 0;
}

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Output

enter a number:45
After reversing =54

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程序2

在这个例子中，我们将取一个3位数，并应用除法和取模运算符来反转这个数 −

在线演示

#include
int main(){
int number,num1,num2,num3,result;
printf("enter a number:");
scanf("%4d",&number);
num1 = number / 100;
num2 = (number % 100) / 10;
num3 = number%10 ;
result = 100*num3 + 10*num2 + num1;
printf("After reversing =%d

",result);
return 0;
}

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Output

enter a number:479
After reversing =974

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