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Tue, 06 May 2025
Convert String to Number
Given a String. Write a function that convert it to number. Such functions are used in larger programs as helper functions.
Input: char* str = "0324"; Output: int 324;
Solution:
int strToNum(char* str)
{
int num = 0;
for(int i=0; str[i]!='\0';i++)
{
int digit = str[i] - '0';
num = num*10 + digit;
}
return num;
}
The function removes one digit from the string at a time and keep adding it to the number.
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