64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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// Main () - execution starts here
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int main (void)
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{
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// Declate file stream variables
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FILE *fInput, *fOutput;
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// Other variables needed
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int i;
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int SampleArray[10] = {1,2,3,4,5,6,7,8,9,10};
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float f = 23.4;
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// Try and open the binary "numbers.dat" (in the current directory) file for writing
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fOutput = fopen ("numbers.dat", "wb");
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// Check we were able to open the file
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if ( fOutput == NULL)
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{
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printf ("\nThe file could not be opened for writing, exiting");
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return -1;
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}
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// Write out a single float to the binary file
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fwrite ( &f, sizeof(float), 1 , fOutput);
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// Now the entire array on one go
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fwrite ( SampleArray, sizeof(int), 10 , fOutput);
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// And close the file
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fclose (fOutput);
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// Try and open the binary "numbers.dat" (in the current directory) file for reading
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fInput = fopen ("numbers.dat", "rb");
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// Check we were able to open the file
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if ( fInput== NULL)
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{
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printf ("\nthe file could not be opened for reading, exiting");
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return -1;
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}
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// Read a single float from the binary file into f
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fread ( &f, sizeof(float), 1 , fOutput);
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// Now read the entire array on one go
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fread ( SampleArray, sizeof(int), 10 , fOutput);
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// Display the values read from the file on the screen
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printf ("The value read into f is %f\n", f);;
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for ( i = 0 ; i < 10 ; i++)
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{
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printf ("Item %d of the array contains %d\n",i, SampleArray[i]);
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}
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// And close the file
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fclose (fInput);
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return (0); // Exit indicating sucess
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}
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