谁能帮我设计一个使用C语言库函数的简单程序

#include <stdio.h>

#include <string.h>

void main()

{

char a[] = "hello"

char b[100]

memset(b, 0, sizeof(b))

strcpy(b, a)

strcat(b, "world!")

printf("%s\n", b)

}

5个函数，余猜滚竖余memset,sizeof,strcpy,strcat,printf,个个常兆烂用。

#include <stdio.h>#include <math.h>void main() { float xdouble yprintf("Please input the value of x:")scanf("%f",&x)if(x>=-10&&x<=4) { y=fabs(x-2)printf("y=%.2f\n",y)} else if(x>=5&&x<=7) { y=x+10printf("y=%.2f\搜橘n",y)} else if(x>=8&&x<=12) { y=pow(x,4)printf("y=%.2f\n",y)} else printf("No answer\腔漏桥n")}

采纳伍猛哦

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