*Executing code with printf's for each iteration for better understanding.*
#include<stdio.h>
main(){
int n, i, j, k, t1=0, t2=0, t3, a[30];
printf("Enter the number of elements\n");
scanf("%d", &n);
for(i=0; i<n; i++){
scanf("%d", &a[i]);
}
for(i=0; i<n; i++)
a[i]=a[i]*a[i];
k=n-1;
i=0;
j=k;
for(;k>=0;k--){
printf("iteration %d\n", t2);
for(j=k,i=0;(i<j) && (a[i]+a[j]!=a[k]) ;){
if(a[i]+a[j] < a[k]){
printf("i++\t%d\t%d\t%d\n", a[i], a[j], a[k]);
i++;
}
else{
printf("j--\t%d\t%d\t%d\n", a[i], a[j], a[k]);
j--;
}
}
t2++;
if(a[i]+a[j]==a[k]){
t1=1;
break;
}
}
if(t1)
printf("%d, %d, %d\n", i, j, k);
else
printf("No ans\n");
}
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