_CP_locate is equivalent to the following BASIC statement:
locate(string1, string2, ac.expression, vc.expression, start.expression, position.variable,string3) then result= 1 else result= 0
int _CP_locate(int* result, CPSTR* string1, CPSTR* string2, int ac.expression, int vc.expression,int start.expression, int * position.variable, CPSTR* string3)
This function returns -1 if an error occurs. The error code is contained in _CP_errno.
/* Prints "1 2". */
CPSTR * s = _CP_mkstr("a\376b");
CPSTR * t = _CP_mkstr("b");
int r,l;
_CP_locate(&r,t,s,0,0,0,&l,_CP_str_null);
_CP_unix_env();
printf("%d %d\n", r, l);