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ADDONETO.C
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1996-02-06
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599b
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37 lines
#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <string.h>
main(argc,argv)
int argc;
char **argv;
{ FILE *f ;
unsigned long value ;
int nb ;
if (argc < 2)
{ printf("Missing arguments ...\n") ;
printf("addoneto filename ...\n") ;
return(0);
}
f = fopen(argv[1],"a+b") ;
if (f != NULL)
{ nb = fscanf(f,"%lu",&value) ;
if (nb <= 0) value = 0 ;
value += 1 ;
fclose(f) ;
}
f = fopen(argv[1],"w+b") ;
if (f != NULL)
{ fprintf(f,"%lu",value) ;
fclose(f) ;
}
return(0) ;
}