Practical C Programming

How to do it…

1. Open the sequential file in read-only mode using the following code:

    fp = fopen (argv [1],"r");

2. If the file does not exist or does not have enough permissions, an error message will be displayed and the program will terminate. Set this up using the following code:

if (fp == NULL) {    printf("%s file does not exist\n", argv[1]);    exit(1); }

3. One line is read from the file, as shown in the following code:

fgets(buffer, BUFFSIZE, fp);

4. Each character of the line is accessed and checked for the presence of periods, as shown in the following code:

for(i=0;i<n;i++)    if(buffer[i]=='.')

5. If a period is found, the character following the period is checked to confirm whether it is in uppercase, as shown in the following code:

if(buffer[i] ...