why the use of File type is said undeclared?

[rayda]

hi guys, i m a beginner for MPI programming.
i m doing a program to open a file, however, there is error saying that 'File' undeclared. but I thought File is a type like int or char, isnt it?
below is my codes:

#include "mpi.h"
#include <stdio.h>
#include <math.h>

#include <stdlib.h>
#include <time.h>

int main(int argc, char **argv)
{
	int data[5][10];
	int i, j, x;
	int myid, numprocs;
	
	File *fp;

	MPI_Init(&argc, &argv);
	MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
	MPI_Comm_rank(MPI_COMM_WORLD, &myid);

	if(myid == 0)
	{
		if((fp=fopen("/home/rayda/pic_1.txt", "r")) == NULL)
		{
			printf("Cant open file\n");
			exit(1);
		}
		for(i = 0; i < 5; i++)
		{
			for(j = 0; j < 10; j++)
			{
				x = fgetc(fp);
				if(x == 49)
				{
					data[i][j] = 1;
				}
				else if(x == 48)
				{
					data[i][j] = 0;
				}
				else
				{
					j--;
				}
			}
		}
		for(i = 0; i < 5; i++)
		{
			for(j = 0; j < 10; j++)
			{
				printf("%d", data[i][j]);
			}
			printf("\n");
		}
	}
	MPI_Finalize();
	return 0;
}

i have been make the statement with error in red color. hopefully someone can tell me what's wrong with my code. thank you.

[Bayint Naung]

It's FILE
C is case-sensitive.