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  1. #include<stdio.h>
  2. int main(){
  3. printf("九九乘法表\n");
  4. int a=1,b=1,c;
  5. while(a<10){
  6. c=a*b;
  7. printf("%dx%d=%d ",a,b,c);
  8. b=b+1;
  9. if(b==a+1){
  10. printf("\n");
  11. b=1;a=a+1;
  12. }
  13. }
  14.  
  15. }
Success #stdin #stdout 0s 5324KB
stdin
Standard input is empty
stdout
九九乘法表
1x1=1 
2x1=2 2x2=4 
3x1=3 3x2=6 3x3=9 
4x1=4 4x2=8 4x3=12 4x4=16 
5x1=5 5x2=10 5x3=15 5x4=20 5x5=25 
6x1=6 6x2=12 6x3=18 6x4=24 6x5=30 6x6=36 
7x1=7 7x2=14 7x3=21 7x4=28 7x5=35 7x6=42 7x7=49 
8x1=8 8x2=16 8x3=24 8x4=32 8x5=40 8x6=48 8x7=56 8x8=64 
9x1=9 9x2=18 9x3=27 9x4=36 9x5=45 9x6=54 9x7=63 9x8=72 9x9=81