c语言416 输入一个整数值，显示该整数值以下的所有奇数

1、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);
    
    while (i > 0)
    {
        if (i % 2)
            printf("%d ", i);
        i--;
    }
    
    return 0;
}

2、while语句

#include <stdio.h>

int main(void)
{
    int i = 1, j;
    puts("please input an integer.");
    do
    {
        printf("j = "); scanf("%d", &j);
        if (j <= 0)
            puts("the range of j is : > 0");
    }
    while (j <= 0);
    
    while (i <= j)
    {
        printf("%d ", i);
        i += 2;
    }
    
    return 0;
}

3、while语句

#include <stdio.h>

int main(void)
{
    int i = 1, j;
    puts("please input an integer.");
    do
    {
        printf("j = "); scanf("%d", &j);
        if (j <= 0)
            puts("the range of j is : > 0 ");
    }
    while (j <= 0);
    
    while (i <= j)
    {
        if (i % 2)
            printf("%d ", i);
        i++;
    }
    
    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);
    
    while (i > 0)
    {
        if (i % 2)
            printf("%d ", i);
        i--;
    }
    putchar('\n');
    
    return 0;
}

5、for语句

#include <stdio.h>

int main(void)
{
    int i, j;
    puts("please input an integer.");
    do
    {
        printf("j = "); scanf("%d", &j);
        if (j <= 0)
            puts("the range of j is > 0 ");
    }
    while (j <= 0);
    
    for (i = 1; i <= j; i+=2)
    {
        printf("%d ", i);
    }
    putchar('\n');
    
    return 0;
}

6、for语句

#include <stdio.h>

int main(void)
{
    int i, j;
    puts("please input an integer.");
    do
    {
        printf("j = "); scanf("%d", &j);
        if (j <= 0)
            puts("the range of j is: > 0");
    }
    while (j <= 0);
    
    for (i = 1; i <= j; i++)
    {
        if (i % 2)
            printf("%d ", i);
    }
    putchar('\n');
    
    return 0;
}

7、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);
    
    do
    {
        if (i % 2)
            printf("%d ", i);
        i--;
    }
    while (i > 0);
    putchar('\n');
    
    return 0;
}

8、do语句

#include <stdio.h>

int main(void)
{
    int i = 1, j;
    puts("please input an integer.");
    do
    {
        printf("j = "); scanf("%d", &j);
        if (j <= 0)
            puts("the range of j is > 0");
    }
    while (j <= 0);
    
    do
    {
        printf("%d ", i);
        i += 2;
    }
    while (i <= j);
    putchar('\n');
    
    return 0;
}

9、do语句

#include <stdio.h>

int main(void)
{
    int i = 1, j;
    puts("please input an integer.");
    do
    {
        printf("j = "); scanf("%d", &j);
        if (j <= 0)
            puts("the range of j is : > 0 ");
    }
    while (j <= 0);
    
    do
    {
        if (i % 2)
            printf("%d ", i);
        i++;
    }
    while (i <= j);
    putchar('\n');
    
    return 0;
}