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Use of command line arguments

Posted By: Rebecca Hughes     Category: C Programming     Views: 4888

Write a program that will receive a filename and a line of text as command line arguments and write the text to the file.

Code for Use of command line arguments in C Programming

   #include  <stdio.h>                                              
                                                                    
   main(argc, argv)                                                 
   int  argc;                    /*   argument count           */
char *argv[]; /* list of arguments */
{ FILE *fp; int i; char word[15]; fp = fopen(argv[1], "w"); /* open file with name argv[1] */
printf("\nNo. of arguments in Command line = %d\n\n",argc); for(i = 2; i < argc; i++) fprintf(fp,"%s ", argv[i]); /* write to file argv[1] */
fclose(fp); /* Writing content of the file to screen */
printf("Contents of %s file\n\n", argv[1]); fp = fopen(argv[1], "r"); for(i = 2; i < argc; i++) { fscanf(fp,"%s", word); printf("%s ", word); } fclose(fp); printf("\n\n"); /* Writing the arguments from memory */
for(i = 0; i < argc; i++) printf("%*s \n", i*5,argv[i]); } Output C>F12_7 TEXT AAAAAA BBBBBB CCCCCC DDDDDD EEEEEE FFFFFF GGGGG No. of arguments in Command line = 9 Contents of TEXT file AAAAAA BBBBBB CCCCCC DDDDDD EEEEEE FFFFFF GGGGGG C:\C\F12_7.EXE TEXT AAAAAA BBBBBB CCCCCC DDDDDD EEEEEE FFFFFF GGGGGG
  
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Rebecca Hughes
Rebecca Hughes author of Use of command line arguments is from London, United Kingdom.
 
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