printf("a="):\rscanf("%d",&a);\rb=sum(a);\rprintf("b=%d",b);\r)\rint sum(int n)\r(int sum=0,k;\rfor(k=0;k<n+1); k++)\rsum=sum+k;\rreturn (sum);\r}\r#include <s(dio.h>\rmypow(double x,int y)\r{double z;.\rint k;\rz=l¬\rfor(k=0;k<y;k++)\rz=z*x;\rreturn (z);\r}\rmain()\r{double a=5.0,s;\rint n=5;\rs=mypow(a,n);\rprintf("s=%f',s);\r}\r673\r5 . ABICDE®¯IJ7E°¦¤¥V±IJ7u²³´\r67µ\r#include <stdio.h>\rmain()\r(int x;\rscanf("%d",&x);\rif(x%2=0)\rprintf(H% d is double",x);\relse\rprintf("%d is odd",x);\r}\r·?67AB\r#include <stdio.h>\rint fun(int n)\r(\rint k;\rif(n/2= =0)\rk=0;\relse k= 1;\rreturn (k)\r)\rmain()\r(int x, t¬\rscanf("%d",&x);\rt=fun(x);\rif(t=D\rprintf("%d is ji shu",x);\relse if(t=O)\rprintf("%d is ou shu",x);