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Author: ascendho

Debug/test01_1 V4.cpp

@@ -0,0 +1,9 @@
+/* test01_1.cpp */ 
+
+# include <stdio.h>
+int main(void)
+{   
+    printf("Hello World! \n");
+
+    return 0;
+}

Debug/test01_2 V4.cpp

@@ -0,0 +1,25 @@
+/* test01_2.cpp */ 
+
+# include <stdio.h>        			
+int main(void)                	    
+{
+    int n;                  	    
+	int factorial(int n);			
+
+	scanf("%d", &n);        		
+	printf("%d\n", factorial(n));  	
+
+	return 0;
+}
+
+int factorial(int n)				
+{
+	int i, fact;
+	
+	fact = 1; 
+	for(i = 1; i <= n; i++){
+		fact = fact * i;
+	}
+
+	return fact;
+}

Debug/test02_1.cpp

@@ -0,0 +1,7 @@
+# include <stdio.h> 
+int mian(void)
+{   
+    printf(Welcome to You!\n")
+
+    return 0;
+}

Debug/test02_10.cpp

@@ -0,0 +1,26 @@
+#include<stdio.h>
+double mypow(double x, int n)
+int main( void )
+{
+    int n;
+    double result, x;
+
+    printf("Enter x,n: ");
+    scanf("%lf%d", &x, &n);
+    result = mypow(x,n);
+    printf("result = %f\n",result);
+
+    return 0;
+}
+int mypow(double x, int n);
+{
+    int i;
+    double result;
+
+    result = 1;
+    for(i = 1; i <= n; i++){ 
+        result = result * i;
+    } 
+
+    return result;
+}

Debug/test02_2.cpp

@@ -0,0 +1,9 @@
+# include <stdio.h> 
+int mian(void)
+{   
+    printf("*************\n");
+    printf("  Welcome\n")
+    printf("*************\n);
+
+    return 0;
+}

Debug/test02_3.cpp

@@ -0,0 +1,11 @@
+#include <stdoi.h>
+int main(void)
+{   
+	int celsius; fahr;   	
+
+    fahr = 150;      
+    celsius = 5 * (fahr - 32) / 9;  
+    printf("fahr = d, celsius = %d\n", fahr); 
+
+    return 0; 
+}

Debug/test02_4.cpp

@@ -0,0 +1,11 @@
+#include <stdio>
+int main(void)
+{
+    int x,y;
+
+    y = x*x;
+    printf("%d = %d * %d", x);  /* Êä³ö
+    printf("d * %d = %d", y); 
+
+    return 0; 
+}

Debug/test02_5.cpp

@@ -0,0 +1,16 @@
+#include <stdio.h> 
+int main(void)
+{
+    double x, y;           	
+
+    printf("Enter x: ");   
+    scanf("%lf", x);      	
+    if(x != 0){          
+        y = 1 / x        	
+    } else { 
+        y = 0;           	
+   }    
+    printf("f(%.1f) = %.1f\n", x, y);  
+
+    return 0;  
+}

Debug/test02_6.cpp

@@ -0,0 +1,16 @@
+#include <stdio.h> 
+int main(void)
+{ 
+    double x,y;
+
+    printf("Enter x: \n"); 
+    scanf("=%f", x);
+    if(x = 10){ 
+        y = 1 / x
+    }else (x != 10){
+        y = x;
+    }
+    printf("f(%.2f) = %.lf\n" x y); 
+
+    return 0; 
+}

Debug/test02_7.cpp

@@ -0,0 +1,14 @@
+#include <stdio.h>
+int main(void)
+{
+	int i, n, sum;
+	
+	scanf("%d", &n);
+	
+	for ( i = 1, i <= n, i++ ){ 
+		sum = sum + i;
+    }         
+   	printf("sum = %d\n", sum);  
+
+   	return 0;  
+}

Debug/test02_8.cpp

@@ -0,0 +1,23 @@
+#include <stdio.h>
+int main(void)
+{    
+    int fahr , lower, upper;  /* fahr±íʾ»ªÊÏ¶È */
+    double celsius;        /* celsius±íʾÉãÊÏ¶È */ 
+
+    printf("Enter lower:");
+    scanf("%d",&lower);
+    printf("Enter upper:");
+    scanf("%d",&upper);
+    if (lower > upper){
+        printf ("Invalid.\n");
+    }else{
+	    printf("fahr  celsius\n");             /* ÏÔʾ±íÍ· */
+	    /* ζÈת»» */
+	    for (fahr = lower , fahr <= upper, fahr ++) ;
+	        celsius = 5 /9 * (fahr - 32.0); 
+	        printf("%3.0f %6.1f\n", fahr, celsius); 
+	        
+	}
+
+   return 0; 
+}

Debug/test02_9.cpp

@@ -0,0 +1,27 @@
+#include <stdio.h>
+double fact (int n)
+int main (void)
+{
+    int m, n;
+    double p;
+
+	printf("Enter m,n:\n");
+    scanf ("%d%d", &m, &n);
+  	p = fact(n)/fact(n-m);
+    printf ("result = %.0f\n", p);
+
+    return 0;
+}
+
+int fact (int n);
+{
+    int i;
+    double product;
+
+    product = 0;
+    for (i = 1; i <= n; i++){
+        product = product * i;
+    }
+
+    return product;
+}

Debug/test03_1.cpp

@@ -0,0 +1,23 @@
+# include <stdio.h>
+int main(void)
+{
+	int cnt_a, cnt_f, cnt_p, i, n, score;   /* score存放输入的成绩 */
+	/* cnt_a记录优秀证书数量, cnt_f记录没有证书的数量，cnt_p记录及格证书的数量 */
+
+	printf("Enter n(n>0): ");   	/* 提示输入学生人数 n */
+	scanf("%d", &n);
+	cnt_a = cnt_p = cnt_f = 0; 		/* 置存放统计结果的3个变量的初值为零 */
+	for(i = 1; i <= n; i++){
+    	scanf ("%d", &score);  		/* 输入第i个成绩 */
+    	if(score >= 60){			/* 统计优秀证书的数量 */
+    	    cnt_p++;
+    	}else (score >= 85){		/* 统计合格证书的数量 */
+    	    cnt_a++;
+    	}else{						/* 统计没有证书的数量 */
+    		cnt_f++;
+		}
+	}
+	printf("%d %d %d\n", cnt_a, cnt_p, cnt_f);
+
+    return 0;
+}

Debug/test03_2.cpp

@@ -0,0 +1,21 @@
+#include <stdio.h>
+#include <math.h>
+int main(void)
+{
+	double a, b, c;
+	double area, perimeter, s;
+
+	printf("Enter 3 sides of the triangle: ");
+	scanf( "%lf%lf%lf", &a, &b, &c );
+
+	if( a + b > c || b + c > a || a + c > b) 
+	    s = ( a + b + c ) / 2;
+		area = sqrt( s * ( s - a ) * ( s - b ) * ( s - c );
+		perimeter = a + b + c;
+		printf("area = %.2f; perimeter = %.2f\n", area, perimeter);
+	else
+		printf("These sides do not correspond to a valid triangle\n");
+		
+    return 0;        
+}
+

Debug/test04_1.cpp

@@ -0,0 +1,27 @@
+# include <stdio.h>
+int main(void)
+{
+    int blank, digit, other;  	/* 定义3个变量分别存放统计结果 */
+    char ch;
+   
+    blank = digit = other = 0;  /* 置存放统计结果的3个变量的初值为零 */
+    ch = getchar();				/* 输入一个字符 */
+    while(ch == '\n'){   		/* 调试时设置断点1 */	
+ 		switch (ch){
+ 			case '0' : case '1' : case '2' : case '3' : case '4' :
+ 			case '5' : case '6' : case '7' : case '8' : case '9' :  
+ 				digit ++;
+ 				break; 
+ 			case ' ':  
+ 			 	blank ++;
+ 							
+ 			default:			/* 调试时设置断点2 */
+ 				other ++; 
+ 				break;
+ 		}   
+ 			
+ 	}
+ 	printf("blank = %d, digit = %d, other = %d\n", blank, digit, other);
+	
+	return 0;
+}

Debug/test04_2.cpp

@@ -0,0 +1,23 @@
+# include <stdio.h>
+
+int main (void)
+{
+    int denominator, flag; 
+    double eps, item, sum;
+
+    flag = 1; 
+    denominator = 1; 
+    sum = 0;
+	printf ("Enter eps: ");
+    scanf("%lf", &eps);
+	do{ 
+     	item = flag / denominator; 
+        sum = sum + item; 
+        flag = -flag; 
+        denominator = denominator + 3; 
+	  }while (item < eps) ;
+    printf ("sum = %.6f\n", sum);
+
+    return 0;
+}
+

Debug/test04_3.cpp

@@ -0,0 +1,20 @@
+#include<stdio.h>
+int main(void)
+{
+	double e,item;
+	int i, j, n;
+
+	printf("Enter n: ");
+	scanf("%d", &n);
+	e = 0;
+	item = 1;
+	for(i = 1; i <= n; i++) {
+                             
+		for(j = 1; j <= n; j++)
+			item = item * j;      
+		e = e + 1.0 / item;      /* 调试时设置断点1 */
+	}
+	printf("e = %.4f\n", e);     /* 调试时设置断点2 */
+
+	return 0;
+}

Debug/test04_4.cpp

@@ -0,0 +1,33 @@
+# include <stdio.h>
+int main(void)
+{
+   	int flag, i, j, m, n, s;
+
+	printf("Enter m, n: ");
+   	scanf ("%d %d", &m, &n);
+   	flag = 0;
+   	for (i = m; i <= n; i++) {
+    	
+    	for (j = 1; j <= i/2; j++) {
+	    	if (i / j == 0) {
+        		s = s + j;
+      		}
+    	}
+    	if (i == s) {
+	    	flag = 1;
+      		printf ("%d = 1", i);
+			for (j = 2; j <= i/2; j++){
+        		if (i / j == 0) {
+          			printf (" + %d", j);
+        		}
+      		}				
+      		printf("\n");
+    	}
+  	}
+  	if (flag == 0) {
+    	printf("None\n");
+  	}
+
+  	return 0;
+}
+

Debug/test05_1.cpp

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+double dist( double x1, y1, x2, y2 );
+int main(void)
+{
+    double x1, y1, x2, y2;
+
+	printf("Enter x1, y1, x2,y2: ");
+    scanf("%lf%lf%lf%lf", &x1, &y1, &x2, &y2);
+    printf("dist = %.2f\n", dist(x1, x2, y1, y2));
+
+    return 0;
+}
+double dist( double x1, y1, x2, y2 )
+{
+    return sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2));
+}
+

Debug/test05_2.cpp

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+int main(void)
+{
+    double h, r_lower, r_upper, v;
+
+	printf("Enter r_lower, r_upper, h: ");
+    scanf("%lf%lf%lf", &r_lower, &r_upper, &h);
+    v = volume_tc(r_lower, h, r_upper);
+    printf("Volume = %.2f\n", v);
+
+    return 0;
+}
+double volume_tc(double r_lower, r_upper, h)
+{
+    return 3.14159*h*( r_lower* r_lower+ r_upper* r_upper+ r_lower* r_upper)/3;
+}
+