43 lines
609 B
C
43 lines
609 B
C
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv)
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{
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int i;
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char c;
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FILE *f;
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FILE *fin;
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FILE *fout;
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//write to file
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f=fopen("testfile.txt","w");
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for(i=0;i<50;i++)
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{
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fputc('1',f);
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}
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fclose(f);
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//append to file
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f=fopen("testfile.txt","a");
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for(i=0;i<50;i++)
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{
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fputc('2',f);
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}
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fclose(f);
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//copy from testfile.txt to copyfile.txt
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fin=fopen("testfile.txt","r");
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fout=fopen("copyfile.txt","w");
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while((c=fgetc(fin))!=EOF)
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{
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fputc(c,fout);
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}
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fclose(fin);
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fclose(fout);
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}
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