30 lines
944 B
C
30 lines
944 B
C
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// Read a binary stock file and print its contents as text
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#include "header.h"
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int main(int argc, char *argv[]){
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if(argc < 2){
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printf("usage: %s <stock.dat>\n",argv[0]);
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exit(1);
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}
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int in_fd = open(argv[1], O_RDONLY);
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FILE *out_file = stdout; // write to standard output
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fprintf(out_file,"%s\n",STOCK_HEADER); // print header as first line
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int stock_num = 0; // tracks which stock index
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while(1){
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stock_num++;
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stock_t stock = {};
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int nbytes = read(in_fd, &stock, sizeof(stock_t)); // read one stock in binary format
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if(nbytes == 0){ // check for end of input
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break;
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}
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char line[MAXLINE];
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stock2str(&stock, line, MAXLINE); // format and print text versions of the stock
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fprintf(out_file,"%s\n", line);
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}
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close(in_fd);
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return 0;
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}
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