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57 lines
1.0 KiB
57 lines
1.0 KiB
3 years ago
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#include <stdio.h>
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#include <string.h>
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int main( int argc, char *argv[] ){
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if( argc == 2 ) {
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unsigned int gamma = 0;
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unsigned int epsilon = 0;
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unsigned int lineLength = 0;
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unsigned int noOfLines = 0;
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// Read the values into an array
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FILE *fp=fopen(argv[1], "r");
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char ch = fgetc(fp);
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while ( ch != '\n' ){
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lineLength++;
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ch = fgetc(fp);
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}
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rewind(fp);
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unsigned int digitCount[lineLength];
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memset( &digitCount, 0, lineLength*sizeof(unsigned int) );
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for ( int i = 0; !feof(fp); i++){
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ch=fgetc(fp);
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switch (ch) {
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case '\n':
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// I will be incremented at the end of the iteration
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i=-1;
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noOfLines++;
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break;
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case '1':
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digitCount[i]++;
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break;
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}
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}
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for (unsigned int i=0; i < lineLength; i++ ){
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if ( digitCount[i] > ( (double)noOfLines ) / 2 ){
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gamma = gamma | 1 << (lineLength - i - 1);
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} else {
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epsilon = epsilon | 1 << (lineLength - i - 1);
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}
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}
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printf("Answer: %d", gamma * epsilon);
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return 0;
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} else {
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printf("You need to provide a file\n");
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return 1;
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}
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}
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