Here is a program in C that illustrates the use of fscanf() to read a text file:

#include <stdio.h>

int main() {
    FILE *filePointer;
    char buffer[100];

    // Open the file in read mode
    filePointer = fopen("example.txt", "r");

    // Check if the file is opened successfully
    if (filePointer == NULL) {
        printf("Error opening the file.\n");
        return 1;
    }

    // Read data from the file using fscanf until the end of the file
    while (fscanf(filePointer, "%s", buffer) != EOF) {
        // Print the data read from the file
        printf("%s\n", buffer);
    }

    // Close the file
    fclose(filePointer);

    return 0;
}