C Program to Convert String to Integer
source link: https://www.geeksforgeeks.org/videos/c-program-to-convert-string-to-integer/
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C Program to Convert String to Integer
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- 30/07/2022
In this video, we will see a C program to convert strings to integers.
What are Strings?
Strings are defined as an array of characters.
Here we will see two different methods for converting a string to an integer:
1. Using Strlen and for loop
2. Using In-built function atoi()
1) Using Strlen and for loop:
Step 1: Frist we store the length of the string.
Step 2: Iterating the for loop.
Num = Num * 10 + (s[i]-'0')
Step 3: Print the result.
2) Using In-built function atoi():
The atoi()function is defined inside stdlib.h header file. It converts the string parameter to an integer. If conversion doesn't exists for that string then it returns zero.
Syntax: int atoi(const char *str);
Apart from that, we will see the time and space complexity of both methods.
Convert string to integer:
https://www.geeksforgeeks.org/convert-string-to-integer-without-using-any-in-built-functions/
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