#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main(void)
{
int getstring(char filename[], char str[]);
char filename[10],str[100];
int m;

printf("please input the name of the file: ");
scanf("%s", filename);
m = getstring(filename, str);
printf("%d\n", m);
printf("%s", str);

return 0;

}

int getstring(char filename[10], char str[100])
{
int i = 0, n;
FILE * fp;

if((fp=fopen(filename, "r")) == NULL)
{
printf("cannot open file.\n");
exit(0);
}

while(!feof(fp))
str[i++]=fgetc(fp);
str[i] = '\0';
n=strlen(str);
fclose(fp);

return(n);

}