C String String Function

Description

Click the following links for the tutorial for String and String Function.

1. Strstr() function takes two strings as arguments and searches the first string for an occurrence of the second string.
2. Strcmp() function compares two strings for equality.
3. Strcat() function concatenates or glues one string to another.
4. Strcpy() function copies the contents of one string into another string.
5. Converting Strings To Numbers
6. Create your own version of tolower() and toupper()
7. Use string conversion functions and then do math calculation
8. Assign string value with strcpy



9. Read input and append them together
10. compares character strings str1 and str2, and returns negative, zero, or positive if str1 is lexicographically less than, equal to, or greater than str2, respectively
11. copies string source to string target, pointer based 2
12. copies string source to string target, pointer based
13. copies string source to string target. This is pointer based version:
14. copies string source to string target. This is an array subscript based version:
15. computes the length of string str, pointer based
16. converts a string of digits into a double type number.



17. returns index of string s2 in string s1 and returns -1 if no substring s2 is found in s1.
18. removes trailing blanks, tabs, and newlines from string str:
19. converts an integer into a string of digits:
20. reverses the contents of string str. You are required to #include the header file <string.h>.
21. reverses the contents of string str.
22. concatenates string str2 to end of string str1; string str1 must be big enough so as to accommodate the string str2:
23. converts a string of digits str into an equivalent integer:
24. returns a length of the string str:
25. copies char array source to char array target:
26. Use functions toupper() and tolower() to convert character case
27. Change character case with functions strlwr() and strupr().
28. Searching string with strstr().
29. Searching string with strspn()
30. Using the strncpy() function to copy sub string
31. Use strncmp() function to compare substring
32. Use strncat() function to append two string together
33. Using the strlen() function to get string length
34. Demonstrates strrev(), strset(), and strnset().
35. Use non-ANSI strdup() function.
36. Searching string with strcspn().
37. Use strcpy() to copy string
38. Use strcmp() function to compare string
39. Searching for a single character with strchr().
40. Using strcat() function to copy string
41. Demonstration of atof().
42. Reverse string s in place with extra variable
43. Reverse string s in place
44. Search sub string
45. Copy string by length, like strncmp
46. Copy string by length, like strncpy
47. Concatenate two string by length, like strncat
48. Create function to check is a string is ending with another string
49. Append two string together
50. Create your own function to convert string to double
51. Remove trailing blanks and tabs
52. Convert string to integer
53. Remove char from string
54. Create your own function to convert string to integer
55. Replaces tabs in the input with the blanks space
56. Fold long input lines into two or more shorter lines after the last non-blank character
57. Remove all comments from a C program and handle quoted strings and character constants
58. Returns the first location in a string s1 where any character from the string s2 occurs, or -1 if s1 contains no characters from s2.
59. Deletes each character in s1 that matches any character in the string s2.
60. Create your own function to get the length of a string
61. Expands shorthand notations like a-z into the equivalent complete list abc...xyz
62. Create your own function to convert integer to string
63. Create a function which returns the position of the rightmost occurrence of t in s, or -1 if there is none.
64. Concatenate one string to another string
65. Convert integer to characters in s
66. Create your own version of strncpy(s1,s2,n) function
67. Write your own version of strncpy(s1,s2,n) function
68. Use sprintf() to combine three items into a string
69. Strncpy() takes a third argument, which is the maximum number of characters to copy.
70. Get the return from strcpy()
71. Check first letter of string input
72. Strcmp() function compares strings until it finds corresponding characters that differ,
73. Use the strcmp() function for checking to see whether a program should stop reading input.
74. Check strcmp function returns
75. Compare string with your own function
76. Joins two strings, check size first
77. Joins two strings with strcat() function
78. Strlen() finds the length of a string
79. Use user-defined output functions
80. Pass the address of a string to puts()
81. Use gets_s() and puts() functions to read and output string
82. Create a function for string-shrinking
83. Removes the spaces from the string
84. Replaces the contents of a string with the string reversed.
85. Check if the second string is contained in the first string
86. Check if a character is contained in a string
87. Search string specified by the first parameter for the first occurrence of a character specified by the second parameter
88. Find token with strrtok function
89. Use the character classification functions to prepare an implementation of atoi()
90. Print a letter x time per line in total y number of lines
91. Create a function chline(ch,i,j) that prints the requested character in columns i through j.
92. Report the number of uppercase letters, the number of lowercase letters, and the number of other characters in the input.