But what if we want to know all the exact occurrences of a string in the file like lines and line numbers. Here we get to know that file contains the given string or not. If check_if_string_in_file('sample.txt', 'is'):Īs file contains the ‘ is’, therefore function check_if_string_in_file() returns True. # Check if string 'is' is found in file 'sample.txt' Let’s check if this file contains a string ‘ is’ or not, Whereas if no line in the file contains the given string, then it returns False. If the line contains the given string, then return True. Then iterates over each line in the file one by one and for each line check if it contains the given string or not. It accepts a file path and a string as arguments. # For each line, check if line contains the string ''' Check if any line in the file contains given string ''' To check if a given string exists in the file or not, we have created a function,ĭef check_if_string_in_file(file_name, string_to_search): In this article, we are going to discuss, how to search for single or multiple strings in a file and get all the matched lines along with their line numbers.

Find word in file print line c++