![]() ![]() To copy your word, you first have to be sure that it is a valid string (it should, again, end with a '\0'), and make sure it's less than 9 characters long (10 if counting the terminator), because you declared array. Now, each element of your array can hold a string up to 9 characters long (remember, the last one has to be the terminator '\0'). If you want to store an entire string inside array, then you'll have to declare your array as an array of arrays of char, like this: char array Is not an array of strings, it's just an array of characters. Then I think Lee's tr-command method is the easiest way to solve Lars's problem.Your understanding of the concept of a "string" might be wrong.Ī string in C is nothing else than an array of characters, with the NUL terminator (character '\0') at the end. The idea is to copy the contents of the string array to another array using pointers and print the resultant string by traversing the new pointer. You can also use strcpy() but it need the allocation of space first. Say Lars needs only convert un uppercase document to lowercase. Time Complexity: O(N) Auxiliary Space: O(1) 4. strdup() can be used to return a copy of C-string. It doesn't convert uppercase letters to lowercase ones. My while loop that jimianus criticized only copies lines of text from stdin to stdout. Although, maybe I didnt get your question, You could use fgets which reads until the newline (then copy len-1 bytes from it to skip the newline). But how do we know how long the huge string could get if Lars plans to reuse the program he's writing? Does the C99 Standard limit the maximum length of a string? This function cant skip n character as I know. To avoid overflows, the size of the array pointed by destination shall be long enough to contain the same C string as source (including the terminating null character), and should not overlap in memory with source. ![]() Otherwise, it may result in undefined behavior. Copies the C string pointed by source into the array pointed by destination, including the terminating null character (and stopping at that point). Maybe Lars can revise jinianus's program to make it call strcat to create a huge string of the ones that program reads with fgets. C programming Note: When you use strcpy (), the size of the destination string should be large enough to store the copied string. copy a string but are not sure if the destination string has enough space for. If the destination string is not large enough to store the source string then the behavior of strcpy () is unspecified or undefined. ![]() If Lars just wants to fill a character array, maybe it's best to read the 90 words character by character. Strcpy is a commonly used C library function that is used to copy a string. Using strcpy () function to copy a large character array into a smaller one is dangerous, but if the string will fit, then it will not be worth the risk. Should our friend's program still capitalize the first word of each sentence or the first letter of each proper noun? Will the program store the lowercase letters in another file or change the original file? Then I wondered why a document in all lowercase letters would be more human-readable than one in all capital letters. At first, I thought it needed only covert each capital letter in a file to a lowercase letter. Everyone, I'm confused about what Lars wants his program to do for him. ![]()
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