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how to check if a command line argument is a link or not
How to check if a command line argument is a link or not in C program
I am reading strings from a file using getline and saving them in a vector of strings.
I want to use the following syntax in my program:
char* command_arg = argv[1];
if (link_command)
link(command_arg);
else
run(command_arg);
A:
Use the strcmp(3) function to compare strings:
if (strcmp(command_arg, "link") == 0)
{
link(command_arg);
}
The strcmp(3) function can be used to test for equality in a string comparison.
Return Values
The strcmp() function returns an integer less than, equal to, or greater than zero if string1 is found, respectively, to be less than, to match, or be greater than string2.
EDIT:
In C99 you can use the strncmp(3) function:
The strncmp() function compares the first n characters of s1 and s2. If s1 is longer than n characters, strncmp() returns a value of n, the maximum number of characters that can be compared. be359ba680
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