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How do I check a string in C programming to see if each character is a number or '.'?
I need to check if a string in my C program only contains digits and the decimal point. How can I do that?
You can use the ctype.h library in C to check if each character in the string is a digit or a decimal point. You can use the isdigit() function to check if the character is a digit and the ispunct() function to check if the character is a punctuation mark, such as a decimal point.