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As you know arrays startsstart with index 00.
it means name of outfileoutfile should be char *outfile = argv[3];char *outfile = argv[3];, not argv[4]argv[4].
As you know arrays starts with index 0.
it means name of outfile should be char *outfile = argv[3]; , not argv[4].
As you know arrays start with index 0.
it means name of outfile should be char *outfile = argv[3];, not argv[4].
