编辑代码

#include <stdio.h>

int recordpercent(short int difference ,int X){
    if(difference<0){difference=-difference;}
    double percent=(double)(difference*100/X);
    printf("percent=%lf %%",percent);
    return 0;
}
int main () {
    short int difference=-30;
    int X=5000;
    recordpercent(difference,X);
    return 0;
}