Example of reading text file in C language

#include <stdio.h>

#define n 1024 //  bytes to read 

int main(void) {
	FILE *fp;
    size_t numread;
    if ((fp = fopen("test.txt", "rb") != NULL) {
    	char buffer[n];
        numread = fread(buffer, sizeof(*buffer), n, fp);
      	printf("read %d bytes，text: %s", numread, buffer);
      
      	fclose(fp);
      	return 0;
    }
        
    return -1;
}