28_strings.c 973 B

12345678910111213141516171819202122232425262728293031323334353637383940414243444546
  1. #include <stdio.h>
  2. #include <string.h>
  3. int main()
  4. {
  5. char a[10];
  6. strcpy(a, "hello");
  7. printf("%s\n", a);
  8. strncpy(a, "gosh", 2);
  9. printf("%s\n", a);
  10. printf("%d\n", strcmp(a, "apple") > 0);
  11. printf("%d\n", strcmp(a, "goere") > 0);
  12. printf("%d\n", strcmp(a, "zebra") < 0);
  13. printf("%d\n", strlen(a));
  14. strcat(a, "!");
  15. printf("%s\n", a);
  16. printf("%d\n", strncmp(a, "apple", 2) > 0);
  17. printf("%d\n", strncmp(a, "goere", 2) == 0);
  18. printf("%d\n", strncmp(a, "goerg", 2) == 0);
  19. printf("%d\n", strncmp(a, "zebra", 2) < 0);
  20. printf("%s\n", strchr(a, 'o'));
  21. printf("%s\n", strrchr(a, 'l'));
  22. printf("%d\n", strrchr(a, 'x') == NULL);
  23. memset(&a[1], 'r', 4);
  24. printf("%s\n", a);
  25. memcpy(&a[2], a, 2);
  26. printf("%s\n", a);
  27. printf("%d\n", memcmp(a, "apple", 4) > 0);
  28. printf("%d\n", memcmp(a, "grgr", 4) == 0);
  29. printf("%d\n", memcmp(a, "zebra", 4) < 0);
  30. return 0;
  31. }
  32. /* vim: set expandtab ts=4 sw=3 sts=3 tw=80 :*/