c语言中do语句；输入两个整数，计算它们之间的所有整数的和

 

 

c语言中程序的循环控制，do语句输入两个整数，计算它们之间的所有整数的和。

1、do语句

#include <stdio.h>

int main(void) { int a, b, min, max, sum = 0; puts("please input two integers."); printf("a = "); scanf("%d", &a); printf("b = "); scanf("%d", &b); min = a > b ? b:a; max = a > b ? a:b; do { sum += min; min++; } while(min <= max); printf("sum = %d\n", sum); return 0; }

 

2、while语句

#include <stdio.h>

int main(void) { int a, b, min, max, sum = 0; puts("please input two integers."); printf("a = "); scanf("%d", &a); printf("b = "); scanf("%d", &b); min = a > b ? b:a; max = a > b ? a:b; while(min <= max) { sum += min; min++; } printf("sum = %d\n", sum); return 0; }

 

3、for语句

#include <stdio.h>

int main(void) { int a, b, min, max, sum = 0; puts("please input two integers."); printf("a = "); scanf("%d", &a); printf("b = "); scanf("%d", &b); min = a > b ? b:a; max = a > b ? a:b; for(min; min <= max; min++) { sum += min; } printf("sum = %d\n", sum); return 0; }