Difference between scanf() and gets() in C

In C language, scanf() and gets() are both used to read input from the standard input (keyboard), so what are the differences between them? This article will briefly compare scanf() and gets(), and introduce the differences between scanf() and gets(). I hope it will be helpful to you. [Video tutorial recommendation: C Language Tutorial]

##scanf() function# The ##scanf() function is used to read data (characters, strings, numbers) entered from the keyboard; it will stop reading data when it encounters a space, newline character or end of file (EOF).

Code example:

#include <stdio.h> 
int main() 
{ 
    char str[20]; 
    printf("请输入：\n"); 
    scanf("%s", str); 
    printf("输出: %s\n", str); 
  
    return 0; 
}

Output:

##gets() function

gets() function is also used to read data input from the keyboard and obtain strings. Will stop reading data when encountering a newline character or end-of-file (EOF).

Code example:

#include <stdio.h> 
int main() 
{ 
    char str[20]; 
    printf("请输入：\n"); 
    gets(str);
    printf("输出: %s\n", str); 
  
    return 0; 
}

Output:

##Difference between scanf() and gets()

1. When the scanf() function is reading input, it will stop reading when it encounters a space, newline character or end of file. However, when reading input, the gets() function will stop reading when it encounters a newline character or the end of the file; it will treat a space as a character in the string, so it will not stop reading when it encounters a space. enter. 2. The scanf() function is used to read multiple values ​​of different data types; while the gets() function can only obtain string data.

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