[已解决]刚接触程序 找了半天没找到问题在哪里

a190150302

//Chapter1/test5.c
#include <stdio.h>
int main(void)
{
        printf("int = %d\n", sizeof(int));
        printf("short int = %d\n", sizeof(short));
        printf("long int = %d\n", sizeof(long));
        printf ("long long int = %d\n", sizeof(long long));
        printf("char = %d\n", sizeof(char));
        printf("_Bool = %d\n", sizeof(_Bool));
        printf("float = %d\n", sizeof(float));
        printf("double = %d\n", sizeof(double));
        printf("long double = %d\n", sizeof(long double));
       
        return 0;
}

10        32        E:\360data\重要数据\桌面\1\test5.cpp        [Error] '_Bool' was not declared in this scope

最佳答案

月排行榜 / 总排行榜

isdkz

2022-2-21 13:45:42

加上 #include <stdbool.h>

#include <stdio.h>
#include <stdbool.h>        # 加上这行才能使用_Bool
int main(void)
{
        printf("int = %d\n", sizeof(int));
        printf("short int = %d\n", sizeof(short));
        printf("long int = %d\n", sizeof(long));
        printf ("long long int = %d\n", sizeof(long long));
        printf("char = %d\n", sizeof(char));
        printf("_Bool = %d\n", sizeof(_Bool));
        printf("float = %d\n", sizeof(float));
        printf("double = %d\n", sizeof(double));
        printf("long double = %d\n", sizeof(long double));
       
        return 0;
}

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isdkz

加上 #include <stdbool.h>

#include <stdio.h>
#include <stdbool.h>        # 加上这行才能使用_Bool
int main(void)
{
        printf("int = %d\n", sizeof(int));
        printf("short int = %d\n", sizeof(short));
        printf("long int = %d\n", sizeof(long));
        printf ("long long int = %d\n", sizeof(long long));
        printf("char = %d\n", sizeof(char));
        printf("_Bool = %d\n", sizeof(_Bool));
        printf("float = %d\n", sizeof(float));
        printf("double = %d\n", sizeof(double));
        printf("long double = %d\n", sizeof(long double));
       
        return 0;
}