learning c programming

  • Strncat () function in C

    Strncat () function in C

     char * strncat (char * dest, const char * src, size_t n) append (string), pointed to by src, at the end of the string pointed to by dest, with a length of up to n characters.
  • The strchr () function in C

    The strchr () function in C

     char * strchr function (const char * str, int c) looks for the first occurrence of the character c (an unsigned char) in the string pointed to by parameter str.
  • The strncpy () function in C

    The strncpy () function in C

     strncpy char * (char * dest, const char * src, size_t n) copies up to n copies to n characters from the string pointed to by src to dest. in case the length of the src is smaller than n, the remainder or the remainder of dest will be filled with null values.
  • The strcspn () function in C

    The strcspn () function in C

     the function size_t strcspn (const char * str1, const char * str2) calculates the length of the character segment of string str1 without containing the characters in str2.
  • The strerror () function in C

    The strerror () function in C

     the function char * strerror (int errnum) searches for an internal array for errnum error numbers and returns a pointer to a string of error messages.
  • The strlen () function in C

    The strlen () function in C

     the function size_t strlen (const char * str) calculates the length of str string (not including the ending null character).
  • Basic C program structure

    Basic C program structure

     before we study the blocks that make up a c program, first look at a sample c program.