Solution
# Read from the file file.txt and print its transposed content to stdout.
awk '
{
for (i=1; i<=NF; i++) {
if(NR == 1) {
res[i] = re$i
} else {
res[i] = res[i]" "$i
}
}
}END {
for (i=1;i<=NF;i++) {
print res[i]
}
}
' file.txt