String str-expl is searched for the int-exp occurrence of the substring starting with str-exp2. If int-exp is not specified, it will default to 1. The function returns an INTEGER number representing the start of the substring, or, if the substring cannot be found, the value 0 will be returned.
Program Example
00100 A0$ = "Microcomputing is fun"
00110 B = 3
00120 PRINT SEARCH(A0$,"is")
00130 PRINT SEARCH (A0$,"i",3)
00140 PRINT SEARCH(A0$,"i",B)
00150 END