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2021-07-26 10:37
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为什么我的程序在Dev c++上能运行,在VS 2019上不能

#include<stdio.h>
#include<string.h>
#define DENSITY 62.4
int main() 
{
    float weight, volume;
        int size, letters;
        char name[40];

    printf("Hi!What's your first name?\n");
    scanf("%s", name);
    printf("%s,what's your weught in pounds?\n", name);
    scanf("%f", &weight);
    size = sizeof(name);
    letters = strlen(name);
    volume = weight / DENSITY;
    printf("Well,%s,your volume is %2.2f cubic feet.\n", name, volume);
    printf("and we have %d bytes to store it.\n", size);

    return 0;
}

在VS 2019上 scanf 我改成了 scanf_s

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2条回答 默认 最新

  • qfl_sdu 2021-07-26 10:47
    已采纳

    vs2019检查严格,注意以下几点:
    1.变量在使用前必须初始化
    2.scanf改为scanf_s
    代码修改如下:

    #include<stdio.h>
    #include<string.h>
    #define DENSITY (float)62.4
    int main() 
    {
        float weight = 0, volume = 0;
        int size = 0, letters = 0;
        char name[40] = {0};
        printf("Hi!What's your first name?\n");
        scanf_s("%s",name,39);
        printf("%s,what's your weught in pounds?\n", name);
        scanf_s("%f", &weight);
        size = sizeof(name);
        letters = strlen(name);
        volume = weight / DENSITY;
        printf("Well,%s,your volume is %2.2f cubic feet.\n", name, volume);
        printf("and we have %d bytes to store it.\n", size);
        return 0;
    }
    
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