Hello there. Does anybody know why doesn't it work?
Compiler message:invalid types 'float [100][float]' for array subscript at lines 11,12.
Why does it work when at line 8 I change float with int?Code:#include<stdio.h> #define max 100 int main() {int f[max],a,b,c,x; /*line 8*/ printf("f(x)=ax^4+bx^2+c dose a,b,c\n"); scanf("%d %d %d",&a,&b,&c); for(x=0;x<max;x++) {f[x]=a*x*x*x+b*x*x+c; /*line 11*/ if(f[x]==0) printf("%d ",x);} /*line 12*/ getchar(); getchar(); return 0; }
Arrays are subscripted with int.
You'd need to do something like:
float f[max];
int x;
<whatever> <your other vars>;
Non-portable, see the FAQ.Code:getchar(); getchar();
Okay, I'll bite. . . how is this non-portable? getch() is the one that is non-portable, I thought. . . getchar() works on Linux, Windows, DOS, however, I don't know about Mac. Where is it non-portable to?Originally Posted by manutd
Whoops, sorry. My bleary tired eyes saw getch
Actually, in retrospect manutd is right. The function itself is portable, but the behaviour you want is probably nonportable. To get rid of the trailing input newline nicely, use fgets() and sscanf() instead.
Code:#include <stdio.h> void J(char*a){int f,i=0,c='1';for(;a[i]!='0';++i)if(i==81){ puts(a);return;}for(;c<='9';++c){for(f=0;f<9;++f)if(a[i-i%27+i%9 /3*3+f/3*9+f%3]==c||a[i%9+f*9]==c||a[i-i%9+f]==c)goto e;a[i]=c;J(a);a[i] ='0';e:;}}int main(int c,char**v){int t=0;if(c>1){for(;v[1][ t];++t);if(t==81){J(v[1]);return 0;}}puts("sudoku [0-9]{81}");return 1;}
