Adding a text plus and text written from a parameter type C in ABAP

This can be achieved by using String Expressions or by using CONCATENATE keyword. With the use of “Concatenate” operator && you can do this.

To use String Expressions, you should check online documentation and sample programs by using T-code: ABAPDOCU as shown above.

You can also refer to below link for ABAP documentation:

https://help.sap.com/doc/abapdocu_731_index_htm/7.31/en-US/index.htm