Thread: Error checking

To enable complete validation, you need to read things as a string, then convert.

Code:

char buff[BUFSIZ];
while ( fgets( buff, BUFSIZ, stdin ) != NULL ) {
    if ( sscanf(buff,"%d",&year) == 1 && year >= 1900 ) {
    } else {
    }
}

Thanks. Checked code and it does work, but can you kindly explain to me what the first three lines do?

Originally Posted by Fehai Soleyn

Thanks. Checked code and it does work, but can you kindly explain to me what the first three lines do?

Salem has already done so, if you look carefully.

There is a minor issue that his example assumes the user does not enter more than BUFSIZ characters in a line, but that is easily corrected.

Code:

char buff[BUFSIZ];  //BUFSIZ is a constant or size of buff array;
while ( fgets( buff, BUFSIZ, stdin ) != NULL ) {//taking input in buff array using standard input (stdin) of BUFSIZ as a string.read about fgets() function
    if ( sscanf(buff,"%d",&year) == 1 && year >= 1900 ) {// convering that string in year integer variable from buff array. read about sscanf() function.
    } else {
    }
}