【Yung-Hsiang Lu】Intermediate C Programming

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1. Intermediate C Programming
   
2. By: Yung-Hsiang Lu
   
3. Publisher: CRC Press
   
4. Pub. Date: June 17, 2015
   
5. ISBN-13: 978-1-4987-1164-7
   
6. Web ISBN-13: 978-1-4987-1164-7
   
7. Print ISBN-13: 978-1-4987-1163-0
   
8. Print ISBN-10: 1-4987-1163-4
   
9. Web ISBN-10: 1-4987-1165-0
   
10. Web ISBN-13: 978-1-4987-1165-4
    
11. Web ISBN-13: 978-1-4987-1166-1
    
12. Web ISBN-10: 1-4987-1166-9
    
13. Pages in Print Edition: 498
    
14. Subscriber Rating: 0 out of 5 rating [0 Ratings]

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https://www.crcpress.com/Intermediate-C-Programming/Lu/p/book/9781498711630

1. // arithmetic1.c
   
2. #include <stdio.h>
   
3. #include <stdlib.h>
   
4. int main (int argc ,char * * argv)
   
5. {
   
6.   int    arr1[] = {7, 2, 5, 3, 1, 6, -8, 16, 4};
   
7.   char   arr2[] = {'m', 'q', 'k', 'z', '%', '>'};
   
8.   double arr3[] = {3.14, -2.718, 6.626, 0.529};
   
9.   int len1 = sizeof(arr1) / sizeof(int);
   
10.   int len2 = sizeof(arr2) / sizeof(char);
    
11.   int len3 = sizeof(arr3) / sizeof(double);
    
12.   printf("lengths = %d, %d, %d\n", len1, len2, len3);
    
13.   int    * iptr = arr1;
    
14.   char   * cptr = arr2;
    
15.   double * dptr = arr3;
    
16.   printf("values = %d, %c, %f\n", * iptr, * cptr, * dptr);
    
17.   iptr ++;
    
18.   cptr ++;
    
19.   dptr ++;
    
20.   printf("values = %d, %c, %f\n", * iptr, * cptr, * dptr);
    
21.   iptr ++;
    
22.   cptr ++;
    
23.   dptr ++;
    
24.   printf("values = %d, %c, %f\n", * iptr, * cptr, * dptr);
    
25.   iptr ++;
    
26.   cptr ++;
    
27.   dptr ++;
    
28.   printf("values = %d, %c, %f\n", * iptr, * cptr, * dptr);
    
29.   return EXIT_SUCCESS;
    
30. }

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1. // swap1.c
   
2. #include <stdio.h>
   
3. #include <stdlib.h>
   
4. void swap1 (int a , int b)
   
5. {
   
6.   int k = a;
   
7.   a = b;
   
8.   b = k;
   
9. }
   
10. int main (int argc ,char * * argv)
    
11. {
    
12.   int u;
    
13.   int t;
    
14.   u = 17;
    
15.   t = -96;
    
16.   printf ("before swap1: u = %d , t = %d \n" , u , t);
    
17.   swap1 (u , t);
    
18.   printf ("after  swap1: u = %d , t = %d \n" , u , t);
    
19.   return EXIT_SUCCESS;
    
20. }

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1. // aredistinct.c
   
2. int areDistinct(int * arr, int len)
   
3. {
   
4.   int ind1;
   
5.   int ind2;
   
6.   for (ind1 = 0; ind1 < len; ind1 ++)
   
7.     {
   
8.       for (ind2 = ind1 + 1; ind2 < len; ind2 ++)
   
9.         {
   
10.           if (arr[ind1] == arr[ind2])
    
11.             {
    
12.               // found two elements with the same value
    
13.               return 0;
    
14.             }
    
15.         }      
    
16.     }
    
17.   // have not found two elements of the same value
    
18.   return 1;
    
19. }

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1. /*
   
2. * charint.c
   
3. * how C treats integer and character differently
   
4. */
   
5. #include <stdio.h>
   
6. #include <stdlib.h>
   
7. int main(int argc, char * * argv)
   
8. {
   
9.   int v = 55;
   
10.   printf("%d\n", v);
    
11.   printf("%c\n", v);
    
12.   return EXIT_SUCCESS;
    
13. }

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1. /*
   
2. * countsubstr.c
   
3. * count the occurrence of a substring
   
4. * argv[1] is the longer string
   
5. * argv[2] is the shorter string
   
6. * argv[1] may contain space if the string enclosed by " "
   
7. */
   
8. 
   
9. #include <stdio.h>
   
10. #include <stdlib.h>
    
11. #include <string.h>
    
12. int main(int argc, char * argv[])
    
13. {
    
14.   int count = 0;
    
15.   char * ptr;
    
16.   if (argc < 3)
    
17.     {
    
18.       printf("Please enter two strings.\n");
    
19.       return EXIT_FAILURE;
    
20.     }
    
21.   printf("argv[1] = %s, strlen = %d\n", argv[1],
    
22.          (int) strlen(argv[1]));
    
23.   printf("argv[2] = %s, strlen = %d\n", argv[2],
    
24.          (int) strlen(argv[2]));
    
25.   ptr = argv[1];
    
26.   do
    
27.     {
    
28.       ptr = strstr(ptr, argv[2]);
    
29.       if (ptr != NULL)
    
30.         {
    
31.           printf("%s\n", ptr);
    
32.           count ++;
    
33.           ptr ++;
    
34.         }
    
35.     } while (ptr != NULL);
    
36.   if (count == 0)
    
37.     {
    
38.       printf("argv[2] is not a substring of argv[1].\n");   
    
39.     }
    
40.   else
    
41.     {
    
42.       printf("argv[2] occurs %d times in argv[1].\n", count);   
    
43.     }
    
44.   return EXIT_SUCCESS;
    
45. }

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