How would you create and process a file in C with example program?
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How would you create and process a file in C with example program?
To create a file in a ‘C’ program following syntax is used, FILE *fp; fp = fopen (“file_name”, “mode”); In the above syntax, the file is a data structure which is defined in the standard library….How to Create a File.
| File Mode | Description |
|---|---|
| a+ | open for reading and writing, appending to file |
How do you name a file in C programming?
To rename a file in C, use rename() function of stdio. h. rename() function takes the existing file name and new file names as arguments and renames the file. rename() returns 0 if the file is renamed successfully, else it returns a non-zero value.
How do I find a specific word in a string?
How to search a word inside a string?
- public class SearchStringEmp {
- public static void main(String[] args) {
- String strOrig = “Hello readers”;
- int intIndex = strOrig. indexOf(“Hello”);
- if(intIndex == – 1) {
- System. out. println(“Hello not found”);
- } else {
- System. out. println(“Found Hello at index “+ intIndex);
How do you search for a string in a file?
In the if statement we use the strstr() function to search for our string in the content we fetched from the file. If we found a match we display line-number, line and we increase find_result with one. The while loop will continue until we reach the end of the file.
How do you read and write a string in a file?
A file can be opened in a read, write or an append mode. Getc and putc functions are used to read and write a single character. We can write to a file after creating its name, by using the function fprintf () and it must have the newline character at the end of the string text.
How to write a char array to a file in C?
To write a C structure to a file, use fwrite (). In this example, we will write char array to a file. In this C Tutorial, we have learnt how to write variables or char array or stream of data into a file using different function available in C programming with examples.
How to write a C structure to a file in C?
To write a C structure to a file, use fwrite(). C Program struct student { char name[10]; int roll; float marks; }; struct student stud= {“rima”, 12, 88.123}; fwrite(&stud, sizeof(stud), 1, fp);