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Saturday, February 7, 2009

VARCHAR Variables and Pointers in Pro*C

VARCHAR emp_name1[10]; /* VARCHAR variable */
VARCHAR *emp_name2; /* pointer to VARCHAR */

strcpy(emp_name1.arr, "VAN HORN");
emp_name1.len = strlen(emp_name1.arr);

emp_name2 = malloc(sizeof(short) + 10) /* len + arr */
strcpy(emp_name2->arr, "MILLER");
emp_name2->len = strlen(emp_name2->arr);

Or, to make emp_name2 point to an existing VARCHAR (emp_name1 in this case), you could code the assignment

emp_name2 = &emp_name1;

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