Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
459 views
in Technique[技术] by (71.8m points)

c - Copy contents of non null terminated char array into another char array

I have an array of structs, each struct has a char array and an int.

typedef struct {
    int id; //Each struct has an id
    char input[80]; //Each struct has a char array
    } inpstruct;

inpstruct history[10]; //Array of structs is created

I have another char array that contains the user's input

char inputBuffer[80];

The user enters a word followed by the character. For example, inputBuffer will contain 3 chars: 'l' 's' ' '.

I want to copy all the chars in inputBuffer into history[index].input

I have tried using:

strcpy(history[index].input, inputBuffer);

But since inputBuffer is not null terminated it does not work. How can I copy all the chars from inputBuffer into history[index].input ?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You want to memcpy

memcpy(history[index].input, inputBuffer, sizeof(inputBuffer)*sizeof(inputBuffer[0]));

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...