35 lines
708 B
C
35 lines
708 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#define STDOUT 1
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#define STDERR 2
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#define SZBUF 256
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int main(int argc, char** argv){
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int descripteur;
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ssize_t echec;
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char buf[SZBUF];
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if (argc < 2){
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fprintf(stderr, "Usage : %s <file-name>\n",argv[0]);
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exit(1);
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}
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descripteur = open(argv[1], O_WRONLY | O_TRUNC | O_CREAT, 0600);
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if (descripteur==-1){
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perror("opening file fail !");
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exit(2);
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}
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write(1,"Numb --> ",9);
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while (echec = read(0,buf,SZBUF)){
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echec = write(descripteur,buf,echec);
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if (echec==-1){
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perror("writing in file failed!");
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exit(3);
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}
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write(1,"Numb --> ",9);
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}
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close(descripteur);
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exit(0);
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}
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