/* Autocorrelation function computation*/

/*include <omp.h>*/
#include <stdio.h>
#include <stdlib.h>
#define N 50

int main (int argc, char *argv[]) 
{
int   i, j, count;
float a[N], ACF[N], sum; 
FILE *fp = fopen("datafile", "r");

count = fwrite(str, 1, strlen(str), fp);
fgets(result_sting,sizeof(result_sting),file)


/* Some initializations */
for (i=0; i < N; i++)
	a[i]=sin(i*0.1)
 /* Read data from file */

fclose(fp);


for (i=0; i<N; i++)
	{
    sum=0;
    for (j=0; j<N-i; j++)
		{
        sum=sum+x[j]*x[j+i];
        }
    ACF[i]=sum/(N-i);
    }

/* Print results */
for (i=0; i < N; i++)
	printf(ACF[i]);
	/* Write data to file */

}

/hw> g++ -o autocor autocor.c
autocor.c: In function ‘int main(int, char**)’:
autocor.c:14:16: error: ‘str’ was not declared in this scope
autocor.c:14:34: error: ‘strlen’ was not declared in this scope
autocor.c:15:7: error: ‘result_sting’ was not declared in this scope
autocor.c:15:41: error: ‘file’ was not declared in this scope
autocor.c:19:1: error: expected ‘;’ before ‘for’
autocor.c:19:21: error: expected ‘;’ before ‘)’ token
autocor.c:31:17: error: ‘x’ was not declared in this scope
autocor.c:38:15: error: cannot convert ‘float’ to ‘const char*’ for argument ‘1’ to ‘int printf(const char*, ...)’

1 4830
-1 2825
-1 2825
1 2544
1 2544
1 4370
1 4370
1 2544
...