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  • c语言 411 将输入的正整数进行逆向输出

    将输入的正整数进行逆向输出。

    1、while语句

    #include <stdio.h>
    
    int main(void)
    {
        int i, j = 0;
        puts("please input an integer.");
        do
        {
            printf("i = "); scanf("%d", &i);
            if (i <= 0)
                puts("the range of i is : > 0 ");
        }
        while (i <= 0);
        
        printf("the reversed result of %d is: ", i);
        while (i > 0)
        {
            j = j * 10 + i % 10;
            i /= 10;
        }
        printf("%d\n", j);
        putchar('\n');
        
        return 0;
    }

    2、while语句

    #include <stdio.h>
    
    int main(void)
    {
        int i;
        puts("please input an integer.");
        do
        {
            printf("i = "); scanf("%d", &i);
            if (i <= 0)
                puts("the range of i is : > 0 ");
        }
        while (i <= 0);
        
        printf("the reversed result of %d is: ", i);
        while (i > 0)
        {
            printf("%d", i % 10);
            i /= 10;
        }
        putchar('\n');
        
        return 0;
    }

    3、for语句

    #include <stdio.h>
    
    int main(void)
    {
        int i, j = 0;
        puts("please input an integer.");
        do
        {
            printf("i = "); scanf("%d", &i);
            if (i <= 0)
                puts("the range of i is : > 0 "); 
        }
        while (i <= 0);
        
        printf("the reversed result of %d is: ", i);
        for (i; i > 0; i /= 10)
        {
            j = j * 10 + i % 10;
        }
        printf("%d\n", j);
        
        return 0;
    }

    4、for语句

    #include <stdio.h>
    
    int main(void)
    {
        int i;
        puts("please input an integer.");
        do
        {
            printf("i = "); scanf("%d", &i);
            if (i <= 0)
                puts("the range of i is : > 0 ");
        }
        while (i <= 0);
        
        printf("the reversed result of %d is: ", i);
        for (i; i > 0; i /= 10)
        {
            printf("%d", i % 10);
        }
        putchar('\n');
        
        return 0;
    }

    5、do语句

    #include <stdio.h>
    
    int main(void)
    {
        int i, j = 0;
        puts("please input an integer.");
        do
        {
            printf("i = "); scanf("%d", &i);
            if (i <= 0)
                puts("the range of i is : > 0 ");
        }
        while (i <= 0);
        
        printf("the reversed result of %d is: ", i);
        do
        {
            j = j * 10 + i % 10;
            i /= 10;
        }
        while (i > 0);
        printf("%d\n", j);
        
        return 0;
    }

    6、do语句

    #include <stdio.h>
    
    int main(void)
    {
        int i;
        puts("please input an integer.");
        do
        {
            printf("i = "); scanf("%d", &i);
            if (i <= 0)
                puts("the range of i is: > 0 ");
        }
        while (i <= 0);
        
        printf("the reversed result of %d is: ", i);
        do
        {
            printf("%d", i % 10);
            i /= 10;
        }
        while (i > 0);
        putchar('\n');
        
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/liujiaxin2018/p/14681312.html
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