...walked a long distance looking for ...

[yan]

Is it grammatically correct to write "The boy walked a long distance looking for an ice-cream stall."

If it is grammatically incorrect, please explain.

Please also advise the proper way to write the sentence.

[bhaisahab]

Is it grammatically correct to write "The boy walked a long distance looking for an ice-cream stall."

If it is grammatically incorrect, please explain.

Please also advise the proper way to write the sentence.

Yes it's correct. The boy walked a long distance, while he was walking he was looking for an ice-cream stall.

[yan]

Thanks for your reply. But what's the difference between
"The boy walked a long distance looking for an ice-cream stall" and
"The boy walked a long distance, looking for an ice-cream stall" ?

Which the correct way of combining 2 sentences? Please advise.

[bhaisahab]

Thanks for your reply. But what's the difference between
"The boy walked a long distance looking for an ice-cream stall" and
"The boy walked a long distance, looking for an ice-cream stall" ?

Which the correct way of combining 2 sentences? Please advise.

This is one sentence, if you want to make it two you could say: 'The boy walked a long distance. He was looking for an ice-cream stall. In your original sentence the comma isn't necessary, it makes an unnatural pause.

[yan]

Thanks, so "The boy walked a long distance looking for an ice-cream stall" is correct and
"The boy walked a long distance, looking for an ice-cream stall" is incorrect.

How do I explain the word 'looking'? How do I explain its participle/continous form and its function?