學點 C 語言(9): if 語句

1. 常規:

#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. && 與 ||

#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. & 與 |

#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. 簡化的 if 語句(?

#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