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View the 1's and 0's that make up a file!

Discussion in 'Programming General' started by Govind, Dec 21, 2010.

  1. Govind

    Govind The One Musketeer
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    View the 1's and 0's that make up a file!

    Bored and experiencing "programmer's block" with a less trivial project, I've made this little app that prints out the actual 1s and 0s that make up a file you pass as the first command line argument to it :)
    Code:
    #include <stdio.h>
    
    int main(int argc, char *argv[])
    {
    	char buf[1000000];
    	int i;
    	FILE *fp; 
    	short curBit;
    	int size;
    	
    	if(argc!=2)
    	{
    		printf("Invalid usage");
    		return 0;
    	}
    	fp = fopen(argv[1], "rb");
    	if(!fp)
    	{
    		printf("Could not open %s", argv[1]);
    		return 0;
    	}
    	fread(buf, sizeof(buf), 1, fp);
    	
    	size = filelength(fileno(fp));
    	
    	for(i = 0; i < 1000000; i++)
    	{
    		char temp = buf[i];
    		int i2;
    		for(i2 = 0; i2 < 8; i2++)
    		{
    			curBit = ((temp >> 7) & 0x1);
    			printf("%d", curBit);
    			temp = temp << 1;
    		}
    		if((size < 1000000) && (i == size))
    		{
    			break;
    		}
    		
    	}
    	return 0;
    }
     
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