SAS character to number or date

Character to number:: input( charvar, 6.0);
number to Character:: put(numvar, 4.0);
character to date:: input(charvar, mmddyy10.);
number to date:: mdy(mon, date, year);
remove specific character from a string:: compress(charvar, '()- '); *remove the (, ), -, and white space from the variable.



/* Program 1:: Convert num to char and char to num */

data temp1;
input numvar charvar $4.;

/* convert character to numeric */
numvar_n=input(charvar, 4.);

/* convert numeric to character */
char_n=put(numvar,4.0);

cards;
123 7691
789 0306
011 8729
;;

proc print data=temp1;
run;



/*program 2 character to date and number to date*/

data temp2;
input date_char mon day year;

/* convert character to date */
date1=input(date_char, mmddyy10.);

/* convert numeric to date */
date2=mdy(mon,day,year);

cards;
10/01/1999 10 01 1999
12/24/2003 12 24 2003
07/01/2001 7 1 2001
;;
proc print data=temp2;
run;

*program 3 remove the white space from a date variable;

data temp2;
input date_char mon day year;

/* convert character to date */
date1=input(compress(date_char), mmddyy10.);
*here the compress without the second parameter;
*by default it is the white space;

/* convert numeric to date */
date2=mdy(mon,day,year);

cards;
*instead of 10/01/1999, this format is 10/ 1/1999 using a space instead of 0;
10/ 1/1999 10 01 1999
12/24/2003 12 24 2003
7/ 1/2001 7 1 2001
;;
proc print data=temp2;
run;