Issuing a CSV

The procedure for issuing a CSV is shown in the following sample code that uses CONVERT.

Create a structure variable from the verb control block (VCB) structure that applies to the verb to be issued.
```
#include <wincsv.h>  
    .  
    .  
struct convert  conv_block;  
```
The VCB structures are declared in the WINCSV.H file; one of these structures is named CONVERT.
Clear (set to zero) the variables within the structure.
```
memset( conv_block, '\0', sizeof( conv_block ) );  
```
This procedure is not required. However, it helps in debugging and reading the contents of memory. It also eliminates the possibility that future versions of a verb are sensitive to fields that are ignored in the current version.
Assign values to the required VCB variables.
```
conv_block.opcode = SV_CONVERT;  
conv_block.direction = SV_ASCII_TO_EBCDIC;  
conv_block.char_set = SV_AE;  
conv_block.len = sizeof(tpstart_name);  
conv_block.source = (LPBYTE) tpstart_name;  
conv_block.target = (LPBYTE) tpstart.tp_name;  
```
The values SV_CONVERT, SV_ASCII_TO_EBCDIC, and SV_AE are symbolic constants representing integers. These constants are defined in the WINCSV.H file.

The character array TPSTART_NAME contains an ASCII string to be converted to EBCDIC and placed in the character array TPSTART.TP_NAME.
Invoke the verb. The only parameter is a pointer to the address of the structure containing the VCB for the verb.
```
ACSSVC((LONG) &conv_block);  
```
You can also use the following statement:
```
ACSSVC_C((LONG) &conv_block);  
```

Use the values returned by the verb.

if( conv_block.primary_rc == SV_OK ) {  
/* other statements */  
    .  
    .  
    .

Additional resources