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homework.c
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/*Find minumum-secmin-thirdmin-average */
#include<stdio.h>
#include<stdlib.h>
int main() {
int sum = 0, number = 0, counter = 0, min1=2147483647, min2= 2147483647, min3= 2147483647;
double average;
printf("Bengisu Sahin || 152120191064 || bngsshn@gmail.com\n");
printf("First Semester || Midterm1\n\n");
printf("Enter some numbers until entered -1:");
while (number != -1) {
scanf_s("%d", &number);
if (number != -1) {
counter += 1;
sum += number;
if (counter == 1)
{
min1 = number;
}
if (counter == 2) {
if (number < min1)
min1 = number;
else
min2 = number;
}
if (counter == 3)
{
if (number < min1) {
min3 = min2;
min2 = min1;
min1 = number;
}
else if (number < min2 && number != min1) {
if (min2 == min3) {
min3 = min2;
min2 = number;
}
else {
min3 = min2;
min2 = number;
}
}
else if (number < min3 && number != min2)
min3 = number;
else {
if (min2 == min3) {
min3 = number;
}
}
}
if (counter > 3) {
if (min1 == min2) {
if (number < min1) {
min2 = number;
min1 = min1 - min2;
min2 = min2 + min1;
min1 = min2 - min1;
}
else if (number < min3 && number != min2) {
min3 = number;
}
else {
if (min3 < number) {
min2 = min3;
min3 = number;
}
}
}
if (min2 == min3) {
if (number < min2 && number != min1)
min2 = number;
else
min3 = number;
}
if (min1 == min3) {
if (number < min1) {
min1 = number;
min2 = min2 - min3;
min3 = min2 + min3;
min2 = min3 - min2;
}
else if (number < min2 && number != min1) {
min3 = min2;
min2 = number;
}
else
min3 = number;
}
if (number < min1) {
min3 = min2;
min2 = min1;
min1 = number;
}
else if (number < min2 && number != min1) {
min3 = min2;
min2 = number;
}
else if (number < min3 && number != min2 && number != min1)
min3 = number;
}
}
}
average = (double)sum / (double)counter;
if (counter >= 3) {
printf("Sum of all numbers: %d\n", sum);
printf("Average: %.2f\n", average);
if (min1 == min2 && min3 != min2) {
printf("Minumum is:%d\nSecond minumum is: %d\n", min1, min3);
}
else if (min2 == min3 && min1 != min3) {
printf("Minumum is:%d\nSecond minumum is: %d\n", min1, min3);
}
else if (min1 == min3 && min1 != min2) {
printf("Minumum is:%d\nSecond minumum is: %d\n", min1, min2);
}
else if (min1 == min2 && min2== min3 && min1==min3) {
printf("Minumum is:%d\n", min1);
}
else {
printf("Minumum is: %d\nSecond minumum is: %d\nThird minumum is: %d\n", min1, min2, min3);
}
}
if(counter < 3 && number==-1) {
printf("You entered less than three numbers and You pressed the exit button.Try again.\n");
}
system("pause");
}