fork download
copy 
  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int main(void)
  5. {
  6.   FILE *fp1, *fp2;
  7.   char fname1[256], fname2[256], fname3[256], str[256];
  8.   int ch, line, col, linecnt=1, colcnt=1, out=0;
  9.  
  10.   printf("filename:"); scanf("%s", fname1);
  11.   if ((fp1 = fopen(fname1, "rt")) == NULL) {
  12.     printf("Can't open input file(%s)\n", fname1);
  13.     return 1;
  14.   }
  15.   strcpy(fname2, fname1);
  16.   strcat(fname2, ".out");
  17.   if ((fp2 = fopen(fname2, "w")) == NULL) {
  18.     printf("Can't open output file(%s)\n", fname2);
  19.     fclose(fp1);
  20.     return 1;
  21.   }
  22.  
  23.   strcpy(fname3, fname1);
  24.   strcat(fname3, ".bak");
  25.   remove(fname3);
  26.  
  27.   printf("insert string:"); scanf("%s", str);
  28.   printf("insert line:"); scanf("%d", &line);
  29.   // printf("insert col:"); scanf("%d", &col);###
  30.   col = 1;
  31.  
  32.   while ((ch = fgetc(fp1)) != EOF) {
  33.     if (out == 0 && line == linecnt && col == colcnt){
  34.       // fprintf(fp2,"%s",str);###
  35.       fprintf(fp2,"%s\n",str);
  36.       out = 1;
  37.     }
  38.     fputc(ch,fp2);
  39.     if (ch == '\n') {
  40.       linecnt++;
  41.       colcnt = 1;
  42.     }else{
  43.       colcnt++;
  44.     }
  45.   }
  46.  
  47.   fclose(fp1);
  48.   fclose(fp2);
  49.  
  50.   rename(fname1, fname3);
  51.   rename(fname2, fname1);
  52.  
  53.   return 0;
  54. }
  55.  
Runtime error #stdin #stdout 0s 2428KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
filename:Can't open input file(��ƿ)
https://ideone.com/UMpTXd
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!