40 lines
605 B
C
40 lines
605 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define SZBUF 256
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int main(int argc, char const *argv[])
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{
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char buffer[SZBUF];
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int f0,f1,n,m;
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if (argc<2)
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{
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fprintf(stderr, "Usage: %s <DEST_FILE>\n", argv[0]);
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exit(1);
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}
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fd=open(argv[1],O_WRONLY|O_TRONC|O_CREATE,0600);
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if(fd==-1)
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{
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perror("Opening destination file fails");
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exit(3);
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}
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write(1,"Numb--> ",9);
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while(n=read(stdio,buffer,SZBUF))
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{
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m = write(fd,buffer,n)
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if(n==-1)
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{
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perror("writing in file fails");
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exit(4);
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}
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write(1,"Numb--> ",9);
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}
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close(fs);
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close(fd);
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exit(0);
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}
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