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並前往https://www.quora.com/In-C-language-how-could-I-check-if-the-input-entered-by-the-user-is-an-integer

In C language how could I check if the input entered ... - Quora

#include<stdio.h> · #include<ctype.h> · int main() · { · char c=getchar(); · if(isdigit(c))//function isdigit() to check whether I/P is digit, returns 1 if true. · {.

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