Unable to get output

//interchange adjacent elements of an array
#include<stdio.h>
int main()
{
int i,t;
int num[10]={1,2,3,4,5,6,7,8,9,10};
for(i=0;i<=9;i+2)
{
t=num[i];
num[i]=num[i+1];
num[i+1]=t;
}
for(i=0;i<=9;i++)
printf("%d",num[i]);
return 0;
}

1. //interchange adjacent elements of an array
2. #include<stdio.h>
3. int main(){
4.    int i,t;
5.    int num[10]={1,2,3,4,5,6,7,8,9,10};
6.    for(i=0;i<=9;i+=2){
7.        t=num[i];
8.        num[i]=num[i+1];
9.        num[i+1]=t; 
10.    }
11.    for(i=0;i<=9;i++) printf("%d",num[i]);
12.    return 0;
13. }

Check the line number 6, you forgot to increment the counter variable “i”.
It should be “i+=2” instead of “i+2”, otherwise it would be an infinite loop.

1 Like

In first loop condition you had to write i=i+2 not i+2

for(i=0;i<=9;i+2) this line is incorrect
for(i=0;i<=9;i=i+2)
or
for(i=0;i<=9;i+=2)