[#CTxIn-2constructor-00]
= xref:CTxIn.adoc[CTxIn]::CTxIn
:relfileprefix: ../
:mrdocs:

Constructs an input spending output nOut of a given transaction.

== Synopsis

Declared in `<primitives/transaction.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
CTxIn(
    xref:Txid.adoc[Txid] hashPrevTx,
    uint32_t nOut,
    xref:CScript.adoc[CScript] scriptSigIn = CScript(),
    uint32_t nSequenceIn = SEQUENCE_FINAL);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *hashPrevTx*
| Hash of the transaction holding the spent output.
| *nOut*
| Index of the spent output within that transaction.
| *scriptSigIn*
| The signature script satisfying the output.
| *nSequenceIn*
| The sequence number for the input.
|===


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