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file opening problem!!!!!

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j_cart007 j_cart007 is offline Offline
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file opening problem!!!!!

 
0
  #1
28 Days Ago
hi!

i'm trying to write the code to open the file and read the contents and write to another file with uppercase but the problem i'm having is path problem everything seems pretty fine but it says Steam != NULL , as long as i know its could'nt locating the file.

NB: i'm using Visual C++ 2008 as IDE.

Please have a look at it and correct me if i'm wrong.
Br.
C Syntax (Toggle Plain Text) 
  1.  
  2. #include "stdafx.h"
  3. #include <stdio.h>
  4. #include <ctype.h>
  5. #include <stdlib.h>
  6.  
  7. int main(void)
  8. {
  9.  
  10. 	int ch; 
  11.  
  12. 	int NumAlpha = 0, NumDigit = 0, NumLower = 0, NumUpper = 0, Count = 0, Place = 0;
  13. 	char *my_word, *my_word2, *my_word3;
  14.  
  15. 	my_word = "dog";
  16. 	my_word2 = "cat";
  17. 	my_word3 = "rat";
  18.  
  19. 	long int pos;
  20. 	const char readerfilepath[500] = "D:\\TEMP\\readObject.txt";
  21. 	const char writerfilepath[500] = "D:\\TEMP\\writeObject.txt";
  22.  
  23.  
  24. 	FILE *ipfileptr;
  25. 	FILE *opfileptr;
  26.  
  27. 	ipfileptr = fopen(readerfilepath, "r");
  28. 	if (ipfileptr == NULL )
  29. 	{ 
  30. 		printf("Reader File not opened!\n"); 
  31. 		exit(8);
  32. 	}
  33. 	else
  34. 	{
  35. 	printf("Reader File opened successfuly!\n");
  36. 	}
  37.  
  38. 	opfileptr = fopen(writerfilepath, "w+");
  39.  
  40. 	if (ipfileptr == NULL )
  41. 	{ 
  42. 		printf("Writer File not opened!\n"); 
  43. 		exit(8);
  44. 	}
  45. 	else
  46. 	{
  47. 	printf("Writer File opened successfuly!\n");		
  48. 	} 
  49. 			while ((ch = getc(ipfileptr)) != EOF){
  50.  
  51. 		if (isalpha(ch))
  52. 			NumAlpha++;	/* add 1 to NumAlpha count */
  53.  
  54. 			if (islower(ch))
  55. 				NumLower++;	 /* add 1 to NumLower count */
  56.  
  57. 			else
  58. 				if (isupper(ch))
  59. 				NumUpper++;	 /*add 1 to NumAlpha count */
  60.  
  61. 		else
  62.  
  63. 			if (isdigit(ch))
  64. 				NumDigit++; /*add 1 to digit count*/
  65.  
  66.  
  67. 			//ch = putc(toupper(ch),opfileptr);
  68.  
  69. 			if (ch == *my_word ||*my_word2 || *my_word3){
  70. 				Count++;
  71.  
  72. 				if((pos = ftell(ipfileptr)) != EOF){
  73. 					Place++;
  74. 		}	
  75.  
  76.  
  77. 	}
  78. 		ch = putc(toupper(ch),opfileptr);
  79.  
  80.  
  81. 	}
  82.  
  83. 	printf("\nNumAlpha = %d NumDigit = %d NumLower = %d NumUpper = %d\nCount = %d\nPosition = %d\n", NumAlpha, NumDigit, NumLower, NumUpper ,Count,Place);
  84. //	getchar();
  85.  
  86.  
  87. 		fclose(ipfileptr);
  88. 		fclose(opfileptr);
  89.  
  90.  
  91. 	return 0;
  92. 	}
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jephthah jephthah is offline Offline
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1
  #2
28 Days Ago
you can't do this:
C Syntax (Toggle Plain Text) 
  1. if (ch == *my_word ||*my_word2 || *my_word3)

you have to specify what you're testing for each OR'ed condition.
C Syntax (Toggle Plain Text) 
  1. if (ch == *my_word || ch == *my_word2 || ch == *my_word3)
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WaltP WaltP is offline Offline
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1
  #3
28 Days Ago
Also you are not writing C++ code so all your variable definitions need to be at the top of your functions, before any executable statements.

And for us to follow your code, use proper formatting
The 3 Laws of the Procrastination Society:
1) Never do today that which can be put off until tomorrow
2) Tomorrow never comes
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0
  #4
27 Days Ago
can u have at it again pls and sorry about any mistake again.
Br.

C Syntax (Toggle Plain Text) 
  1. #include <stdio.h>
  2. #include <ctype.h>
  3. #include <stdlib.h>
  4.  
  5. int main(void)
  6. {
  7.  
  8. 	int ch; 
  9. 	long int pos;
  10. 	int NumAlpha = 0, NumDigit = 0, NumLower = 0, NumUpper = 0;
  11. 	int Count = 0, Place = 0;
  12.  
  13. 	char *my_word, *my_word2, *my_word3;
  14.  
  15. 	const char readerfilepath[500] = "D:\\TEMP\\readObject.txt";
  16. 	const char writerfilepath[500] = "D:\\TEMP\\writeObject.txt";
  17.  
  18. 	my_word = "dog";
  19. 	my_word2 = "cat";
  20. 	my_word3 = "rat";	
  21.  
  22. 	FILE *ipfileptr;
  23. 	FILE *opfileptr;
  24.  
  25. 	ipfileptr = fopen(readerfilepath, "r");
  26. 		if (ipfileptr == NULL )
  27. 		{ 
  28. 			printf("Reader File not opened!\n"); 
  29. 			exit(8);
  30. 		}
  31. 	else
  32. 		{
  33. 			printf("Reader File opened successfuly!\n");
  34. 		}
  35.  
  36. 	opfileptr = fopen(writerfilepath, "w+");
  37.  
  38. 		if (ipfileptr == NULL )
  39. 		{ 
  40. 			printf("Writer File not opened!\n"); 
  41. 			exit(8);
  42. 		}
  43. 	else
  44. 		{
  45. 			printf("Writer File opened successfuly!\n");		
  46. 		} 
  47.  
  48.  
  49. 	while ((ch = getc(ipfileptr)) != EOF){
  50.  
  51. 		if (isalpha(ch))
  52. 			NumAlpha++;	/* add 1 to NumAlpha count */
  53.  
  54. 			if (islower(ch))
  55. 				NumLower++;	 /* add 1 to NumLower count */
  56. 			else
  57. 				if (isupper(ch))
  58. 				NumUpper++;	 /*add 1 to NumAlpha count */
  59.  
  60. 		else
  61.  
  62. 			if (isdigit(ch))
  63. 				NumDigit++; /*add 1 to digit count*/
  64.  
  65.  
  66.  
  67.  
  68. 			if (ch == *my_word ||ch == *my_word2 || ch == *my_word3)
  69. 			{
  70. 				Count++;
  71.  
  72. 				if((pos = ftell(ipfileptr)) != EOF)
  73. 				{
  74. 					Place++;
  75. 				}	
  76.  
  77.  
  78. 			}
  79.  
  80. 	ch = putc(toupper(ch),opfileptr);
  81.  
  82.  
  83. 	}
  84.  
  85. 	printf("\nNumAlpha = %d NumDigit = %d NumLower = %d NumUpper = %d\nCount = %d\nPosition = %d\n", NumAlpha, NumDigit, NumLower, NumUpper ,Count,Place);
  86.  
  87. 	fclose(ipfileptr);
  88. 	fclose(opfileptr);
  89.  
  90.  
  91. 	return 0;
  92. }
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