Thread: compare strings

i have two arrays one is a text file "month1" and the other is user defined "month". my purpose is to compare the month entered by the user to the month in the array if they are the same allow the rest of code to execute if not ask the user to enter another month.

Code:

printf( "Enter Month: " );
scanf( "%s", Month );
if (strncmp(Month, month1, 7) ==0)
{prinf("not the same");

strncmp() - no.

strcmp() - yes.

December needs 9 spaces: 8 char's and one null char: '\0' on the end.

There's an error at line 3.

man strncmp
The strcmp() and strncmp() functions return an integer less than, equal
to, or greater than zero if s1 (or the first n bytes thereof) is found,
respectively, to be less than, to match, or be greater than s2.

In other words, if both strings are equal, strcmp and strncmp should return 0.

For some reason I can't get it figured out when the user enters the month it should compare it to month1 if they match proceed if stop but the program continues no matter what is entered

*if not

Try something like this:

Code:

if(/*Insert here a condition that checks if months do not match*/)
{
  printf("Months do not match.\n");
  return 1;
}

/* Insert here code for if the months match...*/

Returning from the main function is a good way to end the program.

Originally Posted by jamal

i have two arrays one is a text file "month1" and the other is user defined "month". my purpose is to compare the month entered by the user to the month in the array if they are the same allow the rest of code to execute if not ask the user to enter another month.

Code:

printf( "Enter Month: " );
scanf( "%s", Month );
if (strncmp(Month, month1, 7) ==0)
{prinf("not the same");

actually when strcmp() or strncmp() returns 0 they *are* the same...

Code:

printf( "Enter Month: " );
scanf( "%s", Month );
if (strncmp(Month, month1, 7) !=0)
  {
    printf("not the same"); 
  }

Also keep in mind that this is CaSe SeNsItIvE ... January is not the same as january.