Programming in C, 2nd Edition

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关键词：Programming Program Edition editio dition

1. Example
   
2. 1. #include <stdio.h>
   
3. int main()
   
4. {
   
5. int n, r;
   
6. printf(“\n ENTER THE NUMBER :”);
   
7. scanf(“%d”,&n);
   
8. while(n>1)
   
9. {
   
10. r=n%2;
    
11. r is assigned the
    
12. value obtained as
    
13. remainder from this
    
14. if(r==0) expression.
    
15. n=n/2;
    
16. else
    
17. break;
    
18. }
    
19. if(r!=0)
    
20. printf(“\n The number is not power of 2 ”);
    
21. else
    
22. printf(“\n The number is power of 2 ”);
    
23. return 0;
    
24. }

复制代码

1. Example
   
2. 2. #include <stdio.h>
   
3. int main()
   
4. {
   
5. int n, mask = 10;
   
6. printf(“Enter a number: ”);
   
7. scanf(“%d”, &n);
   
8. if((n & mask) == mask)
   
9. printf(“Bits 1 and 3 are set”);
   
10. else
    
11. printf(“Bits 1 and 3 are not set”);
    
12. return 0;
    
13. }

复制代码

1. Example
   
2. 2. #include <stdio.h>
   
3. int main()
   
4. {
   
5. int n, mask = 10;
   
6. printf(“Enter a number: ”);
   
7. scanf(“%d”, &n);
   
8. if((n & mask) == mask)
   
9. printf(“Bits 1 and 3 are set”);
   
10. else
    
11. printf(“Bits 1 and 3 are not set”);
    
12. return 0;
    
13. }

复制代码

1. Example
   
2. 2. #include <stdio.h>
   
3. int main()
   
4. {
   
5. int n, mask = 10;
   
6. printf(“Enter a number: ”);
   
7. scanf(“%d”, &n);
   
8. if((n & mask) == mask)
   
9. printf(“Bits 1 and 3 are set”);
   
10. else
    
11. printf(“Bits 1 and 3 are not set”);
    
12. return 0;
    
13. }

复制代码

1. 3. #include <stdio.h>
   
2. int main()
   
3. {
   
4. int n, mask = 4;
   
5. printf(“\n Enter a number: ”);
   
6. scanf(“%d”, &n);
   
7. num |= mask;
   
8. printf(“\n After ensuring bit 2 is set: %d\n”, n);
   
9. return 0;
   
10. }

复制代码

Programming in C, 2nd Edition

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nieqiang110 发表于 2016-11-26 10:33
Programming in C, 2nd Edition

感谢Nicolle老师