scanf（）沒有在輸入

所以這是我目前的問題。 Scanf（）實際上並沒有在我的程序中的特定點上掃描，並且沒有任何理由不能從我的編程/邏輯部分中進行掃描（嗯，據我所知）。scanf（）沒有在輸入

此外，我有一個if語句，也是不工作，如果我輸入31，它應該做條件。但是，它沒有。爲了澄清，任何時候我切換scanf（）與gets（）一個窗口彈出說：「LFSR.c已停止工作......」。所以，出於某種原因，我不能僅僅做這個轉換。

#include <stdio.h> 
#include <stdlib.h> 

int main(void) 
{ 
    int i = 0; 
    int j = 0; 
    int k = 0; 
    int result = 0; 
    int sigBit = 0; 

    int numOfRands; 

    unsigned feedBack; 

    // Will hold the input 
    unsigned int input; 
    // Will be the number of taps the user can give. 
    int taps[32]; 

    // Prompts user for an unsigned int 
    puts("Please write an unsigned integer."); 

    // Places the input into the correct variable. 
    // This works perfectly fine. 
    scanf("%u", &input); 

    // Prompt user for amount of random numbers they'd like. 
    puts("How many random numbers would you like to be generated."); 

    // Places the input into the corresponding variable. 
    // This scanf never actually happens. It skips over it. 
    scanf("&d", &numOfRands); 

    // Prompts the use for the taps they wish to use. 
    puts("Please give the taps you'd like to use, between the numbers 0 - 32"); 

    // Scan the taps into the array, 
    while(fscanf(stdin, "%d", &taps[i]) == 1) 
    { 
     // I also tried to just use if(i == 31), but eitherway, it never triggered this 
     // conditional statement. 
     if(taps[i] == 31) 
      { 
       sigBit = 31; 
      } 

     i++; 
     puts("Tap stored."); 

    } 
    puts("Currently, the sig bit is,"); 
    printf("%d", sigBit); 

    if(sigBit == 0) 
    { 
     taps[i] = 31; 
     printf("We placed the sig bit as a Tap.\n"); 
     printf("%d, %d\n", taps[i], i); 
    } 

    for(j = 0, k = 1; j < i+1; j = k++) 
    { 
     printf("The %d tap was, %d\n", j, taps[j]); 

    } 
    printf("Please input how many random numbers you want to be generated now\n"); 

    // This is to test if scanf is working or not, and it always triggers so, 
    // That means there's an error, right? 
    if(scanf("%d", &numOfRands) != 1) 
     exit(1); 

    printf("We will create %d random numbers for you.", numOfRands); 






    return 0; 
}

來源

2014-04-03 user41836

有人需要使用回車鍵，對不對？ – devnull

看看右邊的一些相關問題。 – devnull

'scanf（「＆d」，＆numOfRands）;'?? – Dabo

scanf("&d", &numOfRands);

你的意思

scanf("%d", &numOfRands);

？

來源

2014-04-03 19:58:36

你非常正確，它真的傷害了我。謝謝。 – user41836

您使用了兩次地址運算符，一個輸入順序字符串。要在字符串中使用正確的運算符是％d，因爲它類似於int。％d - int。％c - char。％s - 字符串。依此類推... 無論如何 - scanf應該寫成scanf("%d", &numOfRands);而不是scanf("&d", &numOfRands);

來源

2014-04-03 20:34:43

scanf（）沒有在輸入

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