1125.cpp

#include <stdio.h>
#include <string.h>

void exam1(){
int a[4][2];
int i,j;
int tot;
double avg;

for(i=0;i<4;i++){
	printf("%d번 학생의 수학,C언어 성적 입력 : ",i+1);
	for(j=0;j<2;j++)
	scanf("%d",&a[i][j]);
}
for(i=0;i<4;i++){
tot=0;
for(j=0;j<2;j++){
	tot +=a[i][j];
}	
avg= tot/2.0;
printf("%d번 학생의",i+1);
printf("총점 : %3d 평균 : %.2f\n",tot,avg);
}
}

void exam2(){
int arr[5];
int max,min,i;
for(i=0;i<5;i++){
	printf("입력 :");
	scanf("%d",arr[i]) ;
}
max=min=arr[0];
for(i=1;i<5;i++)
{
	if(max<arr[i])max=arr[i];
	if(min>arr[i])min = arr[i];
	
	printf("최다값: %d\n",max);
		printf("최소값: %d\n",min);
}
}

void exam3(){
int arr[5],sum=0,i;
float avg;
for(i=0;i<5;i++){
	printf("%d라운드 점수 : ",i+1);
	scanf("%d",&arr[i]);
	sum = arr[i]+ sum;
}
avg=sum/5;
printf("\n총점은 %d점이며,평균은%.2f점 입니다.",sum,avg);
}

void exam4(){
int i,su,snt = 0;
int b[10]={25,7,25,3,25,3,7,25,1};
printf("데이터 : ");
scanf("%d",&su);
for(i=0;i<10;i++){
	if(b[i]==su)
		snt=snt +1;
} 
printf("%d은 %d개 있습니다\n",su,snt);
}

void exam5(){
int arr[4][5];
int i,j,cnt=1;
for(i=0;i<4;i++)
{
	for(j=0;i<5;i++){
		arr[i][j]=cnt ++;
	}
}

for(i=0;i<4;i++)
{
	for(j=0;i<5;i++){
		printf("%5d",arr[i][j]);
	}
}
printf("\n");
}

void exam6(){
char mark[5][5]={'\0'};
int i,j;
for(i=0;i<5;i++){
	for(j=0;j<5;j++){
		if(i==j||(i+j)==4)mark[i][j]='X';
	}
}
for(i=0;i<5;i++){
	for(j=0;j<5;j++){
		printf("%c",mark[i][j]);
	}
	printf("\n");
}
}

void exam7(){

int data[6],i;
for(i=0;i<6;i++){
	printf("정수를 입력 :");
	scanf("%d",&data[i]); 
}
for(i=0;i<6;i++){
	printf(" %d",data[i]);
}
}

void exam8(){
char voca[50];
int len = 0;
printf("영단어 입력 :");
scanf("%s",voca);

while(voca[len])!=\0;
len++;
printf("입력한 영단어의 길이는 %d",len); 
}

void exam9(){
	char str[100];
	int i;
	gets(str);
	printf("str의 문자길이 : %d\n",strlen(str));
	
	for(int i=strlen(str);i>=0;i--)
	printf("%c",str[i]);

}

void exam10(){

}

void exam11(){

}

void exam12(){

}

void exam13(){

}

void exam14(){

}

void exam15(){

}

void exam16(){

}

void exam17(){

}




main(){
	int num;
	while(1){
    	printf("\n문제번호 : ");
		scanf("%d", &num);
		printf("%d번 문제===========================\n", num);
		switch(num){
			case 1: exam1(); break;
			case 2: exam2(); break;
			case 3: exam3(); break;
			case 4: exam4(); break;
			case 5: exam5(); break;
			case 6: exam6(); break;
			case 7: exam7(); break;
			case 8: exam8(); break;
			case 9: exam9(); break;
			case 10: exam10(); break;
			case 11: exam11(); break;
			case 12: exam12(); break;
			case 13: exam13(); break;
			case 14: exam14(); break;
			case 15: exam15(); break;
			case 16: exam16(); break;
			case 17: exam17(); break;
            default: return 0 ;
		}
	}
}