C abs()

abs() — Calculate Integer Absolute Value

IBM 說明

The abs() function returns the absolute value of an integer argument n.

我的理解：此函式會將輸入的整數取決對值後回傳

程式碼

#include <string.h>
#include <stdio.h>
int main(void)
{
    int number_in = -123;
    int number_out;
    number_out = abs(number_in);
    printf("number_in:%d,number_out:%d\n", number_in,number_out);
}

執行結果

參考資料

https://www.ibm.com/docs/en/i/7.4?topic=files-stdlibh#stdlib