25 lines
411 B
C
25 lines
411 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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#include <stdbool.h>
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int num_sum(int a, int b) // 函数定义
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{
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int sum = 0;
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for (int i = a; i <= b;i++)
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{
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sum += i;
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}
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return sum;
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}
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int main()
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{
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int a, b;
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printf("请输入两个整数：");
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scanf("%d %d", &a, &b);
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printf("%d和%d之间的所有数的和：sum = %d\n", a, b, num_sum(a, b));
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return 0;
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} |