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Closes the file and flushes its buffer

//Return value: If successful, zero is returned, or EOF is returned. #include <stdio.h> #include <stdlib.h> int main(void) { FILE *fp; if((fp=fopen("testing", "rb"))==NULL) { printf("Cannot open file.\n"); exit(1); } if(fclose(fp)) printf("File close error.\n"); return 0; }