code
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1 #include<stdio.h> 2 #include<stdlib.h> 3 int main() 4 { 5 int a = 1; 6 int b = 2; 7 a = a + b; 8 b = a - b; 9 a = a - b; 10 printf("a=%d\n", a); 11 printf("b=%d\n", b); 12 system("pause"); 13 return 0; 14 } 15 16 17 18 2.(1) 19 #include<stdio.h> 20 #include<stdlib.h> 21 int main() 22 { 23 int a = 1; 24 int b = 2; 25 int c = 0; 26 c = a; 27 a = b; 28 b = c; 29 printf("a=%d\n", a); 30 printf("b=%d\n", b); 31 system("pause"); 32 return 0; 33 34 2(2). 35 #include<stdio.h> 36 #include<stdlib.h> 37 int main() 38 { 39 int a=1; 40 int b=2; 41 a=a^b; 42 b=b^a; 43 a=a^b; 44 printf("a=%d\n",a); 45 printf("b=%d",b); 46 system("pause"); 47 return 0; } 48 49 3. 50 #include<stdio.h> 51 #include<stdlib.h> 52 #include<math.h> 53 54 int main() 55 56 { 57 58 int i =0,a[10]; 59 60 for(i = 0; i < 10; i++) 61 62 scanf("%d",&a[i]); 63 64 int max = a[0]; 65 66 for(i = 0; i < 10; i++) 67 68 if(max < a[i]) 69 70 max = a[i]; 71 72 printf("%d",max); 73 74 system("pause"); return 0;} 75 76 4 77 #include<stdio.h> 78 #include<stdlib.h> 79 int main() { 80 int a,b,c,t; 81 scanf("%d %d %d",&a,&b,&c); 82 if(a<b) 83 { 84 t=b; b=a; a=t; } 85 if(a<c) 86 { 87 t=a; a=c; c=t; } 88 if(c>b) 89 { t=b; b=c; c=t; } 90 printf("%d %d %d",a,b,c); 91 92 system("pause"); 93 return 0; 94 } 5. 95 #include<stdio.h> 96 #include<stdlib.h> 97 int main() 98 { 99 int a,b,c; 100 scanf("%d %d",&a,&b); 101 102 while(a%b) 103 104 { c=a%b; a=b; b=c;} 105 106 printf("%d",b); 107 system("pause"); 108 return 0; }