学步园

1. 常规:

---

#include <stdio.h>

int main(void)
{
    int i;

    for (i = 0; i 

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i  4)
            printf("%d\n", i);
        else
            printf("*\n");
    }
    getchar();
    return 0;
}

2. && 与 ||

---

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i 3 && i

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i 7) {
            printf("%d\n", i);
        }
    }
    getchar();
    return 0;
}

3. & 与 |

---

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i 3 & i

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i 7) {
            printf("%d\n", i);
        }
    }
    getchar();
    return 0;
}

4. !

---

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i  4)) {
            printf("%d\n", i);
        }
    }
    getchar();
    return 0;
}

5. 梯次:

---

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i 

6. 嵌套:

---

#include <stdio.h>

int main(void)
{
    int i;
    for (i = 0; i  2) {
            if (i%2 == 0) {
                printf("%d\n", i);
            }
        }
    }
    getchar();
    return 0;
}

7. 简化的 if 语句(?

---

#include <stdio.h>

int main(void)
{
    int i,j;
    
    for (i = 0; i 

#include <stdio.h>

int main(void)
{
    int i,j;
    
    for (i = 0; i