29 lines
579 B
C
29 lines
579 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <math.h>
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int main()
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{
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// !浮点数的范围
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printf("%f\n", 12.0/0.0); //12/0是没有定义的，即只有浮点数有无穷大和无穷小
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printf("%f\n", -12.0/0.0);
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printf("%f\n", 0.0/0.0);
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//inf是无穷大，nan是无穷小
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// !浮点数的精度
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float a, b, c;
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a = 1.345f; //带小数点的默认是double类型，所以要加f来指定是float类型
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b = 1.123f;
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c = a + b;
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if (c== 2.468)
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{
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printf("c = 2.468\n");
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}
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else
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{
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printf("不相等！ c=%.10f,或%f\n", c, c);
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}
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return 0;
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} |