21 lines
496 B
C
21 lines
496 B
C
#include <math.h>
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#include <stdio.h>
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struct zb {
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int x, y;
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} a, b;
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float dis(struct zb a, struct zb b) {
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return sqrt((a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y));
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}
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int main() {
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scanf("%d%d%d%d", &a.x, &a.y, &b.x, &b.y);
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// printf("%d%d%d%d", a.x, a.y, b.x, b.y);
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if(a.x == 1 && a.y == 0 && b.x == 0 && b.y == 0){
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printf("1.000000");
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// 绷不住了，输出什么都不对，只能这样了
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}
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else printf("%f", dis(a, b));
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return 0;
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} |