Yes it will but increase the amount you do to make them more defined and make sure you have good form. Or you could bench press. But push ups alone won't give you pecs. they will only tone your pecs. to build mass you should lift weights: flyes, bench press with barbell and dumbell, etc.
Push ups
Push-ups.
For the arms there is the curl, the wrist curl which works the forearm. For the pecs, you can do the bench, pec-deck and push ups help. And for the abs leg raises work them and crunches. Also V-situps work really well.
if you do regular push ups and other exercises that involve your pecs they will eventually even out. the weaker muscle will be stressed more and create more muscle.
Yes, in fact, this is the #1 best way to train pecks.
Push ups will help with upper back, pecs, shoulders, and tricep. They are absolutely a good way to tone your arms.
I find wide arm push ups the most effective way of building up pecs, and to be honest, it looks a lot better than weight-gained pecs. For inner pecs: close grip chin ups, hands touching.
Petorial muscles
Yes, the exercise will build up the size of the pectoral muscles ("pecs").
A press up is very similar to a push up only a push up works triceps, biceps, and pecs a press up works biceps, stomach, and lats
Some common exercises to strengthen muscles outside the pecs include push-ups, pull-ups, rows, shoulder presses, bicep curls, tricep dips, and planks.
If The Teachers Push You Really And Make you stay after school to do work.