What is the purpose of fscanf() in C?

Explanation:

fscanf() Function in C

Definition: The fscanf() function in C is used for reading formatted input from a file. It is part of the standard I/O library and allows for data to be read from a file in a manner similar to how the scanf() function reads input from the standard input (keyboard).

Syntax: The syntax of the fscanf() function is as follows:

int fscanf(FILE *stream, const char *format, ...);

Here, FILE *stream is a pointer to a FILE object that identifies the input stream, const char *format specifies the format of the input, and the ellipsis (...) represents the additional arguments where the data read from the file will be stored.

#include 

int main() {
    FILE *file;
    int num;
    float fnum;
    
    file = fopen("data.txt", "r");
    if (file == NULL) {
        printf("Error opening file.\n");
        return 1;
    }
    
    fscanf(file, "%d %f", &num, &fnum);
    printf("Integer: %d, Float: %f\n", num, fnum);
    
    fclose(file);
    return 0;
}

In this example, the fscanf() function reads an integer and a floating-point number from the file data.txt and stores them in the variables num and fnum, respectively.