【c学习-3】

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#include<stdio.h>
int main(){
    int a[]={,,,,};
    int i=;
    for(i=;i<=;i++){
        printf("%d\n",a[i]);
        if(i==){
            printf(",");
        }

    }
    putchar("\n");
}

#include<stdio.h>
int main(){
    int arry[][]={{,,,},{,,,},{,,,}};
    int i,j=;
    for(i=;i<;i++){
        for(j=;j<;j++){
            printf("arry[%p][%p]=%p",j,j,arry[i][j]);
        }
        printf("\n");
    }

}

#include<stdio.h>
int main(){
    /*int i=0;
    int a[10]={'H','e','l','l','o'};
    printf("%ld\n",sizeof(a));
    char b[10]="hello";
    memset(b,'a',10);  //覆盖字符函数
    for(i=0;i<10;i++){
        printf("%c\n",b[i]);
    }
    int length=strlen(b);  //字符长度函数
    printf("length=%d\n",length);
    */
    char x[]="";
    char y[]="";
    char z[]="";
    int diff=strcmp(x,y);  //字符比较函数
    printf("%d\n",diff);
    //strcpy(z,y);              //字符复制函数
    //printf("z=%s\n",z);
    strncpy(z,x,);
    printf("z=%s\n",z);        //字符复制函数升级版
    strcat(x,y);             //字符拼接函数
    printf("x=%s\n",x);

    /*    if(diff>=0){
        printf("x>y");
    }else if(diff<0){
        printf("x<y");
    }else{
        printf("x=y");
    }

*/
}

#include<stdio.h>
int funX(int a,int b){
    return a+b;
}
int main(){

    funX(,);
}

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