scanf("%f，%f",&x1,&y1);scanf("%f，%f",&x2,&y2);两句中逗号有问题，应用英文输入法输入；#include"stdio.h"#include"math.h"main(){float x1,x2,y1,y2,d;printf("\input x1,y1:");scanf("%f,%f",&x1,&y1);printf("\input x2,y2：");scanf("%f,%f",&x2,&y2);printf("\n");d=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));printf("两点之间的距离为%8.4f",d);}
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