How to catenate string with variable and use this string as visa comand?

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Muhammad Saad Naeem 2017-5-16

回答： Walter Roberson 2017-5-21

i add the value of c in string and than sendas visa command but it is not working i use two types of code below

c=1;
for i=0:10
c= 0.2+c;
u=fprintf('SOUR:VOLT %dV, (@2)',c);
fprintf(obj, 'u ');
end

also the in second try i use concatenation of string like given below

for i=1:4
%c= i+c;
s2 = 'SOUR:VOLT' ;
s1 = num2str(c);
s3 = 'V, (@2)';
s = strcat(s2,{' '},s1,s3);
fprintf(obj, 's' );
end

but instrument is not receiving proper command as is not giving output accordingly

@Santhana Raj Thanks for help, it is done by your method

@KSSV obj is visa object, i wanted to send command to U2722A via visa, but i was unable to send proper command by including C value

Walter Roberson 2017-5-21

You have

u=fprintf('SOUR:VOLT %dV, (@2)',c);

you are trying to use an integer format, %d, for a non-integer value, which is changing by 0.1 at a time. You should use

u=fprintf('SOUR:VOLT %.1fV, (@2)',c);

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