56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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/*
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* C Program Delete a specific Line from a Text File
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*/
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#include <stdio.h>
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int main()
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{
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FILE *fileptr1, *fileptr2;
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char filename[40];
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char ch;
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int delete_line, temp = 1;
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printf("Enter file name: ");
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scanf("%s", filename);
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//open file in read mode
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fileptr1 = fopen(filename, "r");
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ch = getc(fileptr1);
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` while (ch != EOF)
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{
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printf("%c", ch);
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ch = getc(fileptr1);
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}
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//rewind
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rewind(fileptr1);
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printf(" \n Enter line number of the line to be deleted:");
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scanf("%d", &delete_line);
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//open new file in write mode
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fileptr2 = fopen("replica.c", "w");
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ch = getc(fileptr1);
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while (ch != EOF)
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{
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ch = getc(fileptr1);
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if (ch == '\n')
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temp++;
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//except the line to be deleted
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if (temp != delete_line)
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{
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//copy all lines in file replica.c
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putc(ch, fileptr2);
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}
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}
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fclose(fileptr1);
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fclose(fileptr2);
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remove(filename);
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//rename the file replica.c to original name
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rename("replica.c", filename);
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printf("\n The contents of file after being modified are as follows:\n");
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fileptr1 = fopen(filename, "r");
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ch = getc(fileptr1);
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while (ch != EOF)
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{
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printf("%c", ch);
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ch = getc(fileptr1);
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}
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fclose(fileptr1);
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return 0;
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}
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