Thread: Problem reading file

  1. #1
    Registered User
    Join Date
    Mar 2004
    Posts
    41

    Problem reading file

    The following is my code to read a file.

    Code:
    #include <stdio.h>
    #include <ctype.h>
    #include <string.h>
    
    main(int argc,  char *argv[])
    {   
       FILE *cfPtr;
       char xyz[10];
    	if( argc != 2 )
    	{    printf("Argument provided incorrect\n");
    	}else{
    	   if((cfPtr = fopen(argv[1],"r")) == NULL){
    		printf("file couldnt not be open");
    	   }else{
    		fscanf(cfPtr, "%s", xyz);
    
    		while(!feof(cfPtr)){
    			printf("%s\n", xyz);
    			fscanf(cfPtr, "%s", xyz);
    		}
    		 fclose(cfPtr);
    		 }
    	}
    }

    The following is the file that i wanted to read.

    Code:
    #include <stdio.h>
    
    main(int argc,  char *argv[])
    { int c, i;
    
      if (argc == 1) /* No command line arguments */
        while ((c = getchar()) != EOF) /* echo whatever is typed */
          putchar(c);
    
      else /* at least one command line argument */
      { printf("\n");
        for(i = 0; i < argc; i++)
          printf("argv[%d]=\"%s\"\n", i, argv[i]); /* print each argument */
        printf("\n");                              /* NB argv[0] = program name */
      }
    }
    My program manage to read the following content only. It comes out error msg after that. I tried to debug and it state
    "00405410 mov dword ptr [edx+4],ecx". How can i solved this problem so that it is able to read till the end of the file ??

    Code:
    #include <stdio.h>
    
    main(int argc,  char *argv[])
    { int c, i;
    
      if (argc == 1) /* No command line arguments */
        while ((c = getchar()) != EOF) /* echo whatever is typed */
          putchar(c);
    
      else /* at least one command line argument */
      { printf("\n");

  2. #2
    Registered User
    Join Date
    Mar 2004
    Posts
    41
    I manage to figure out dy. The problem is due to small memory allocation.

  3. #3
    and the hat of int overfl Salem's Avatar
    Join Date
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    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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